[PATCH 5.10 110/529] net: ethernet: ti: add missing of_node_put before return

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Wang Qing <wangqing@xxxxxxxx>

[ Upstream commit be565ec71d1d59438bed0c7ed0a252a327e0b0ef ]

Fix following coccicheck warning:
WARNING: Function "for_each_child_of_node"
should have of_node_put() before return.

Early exits from for_each_child_of_node should decrement the
node reference counter.

Signed-off-by: Wang Qing <wangqing@xxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 29 ++++++++++++++++--------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 5300e1439e1e5..4074310abcff4 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -1724,13 +1724,14 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 		if (ret < 0) {
 			dev_err(dev, "%pOF error reading port_id %d\n",
 				port_np, ret);
-			return ret;
+			goto of_node_put;
 		}
 
 		if (!port_id || port_id > common->port_num) {
 			dev_err(dev, "%pOF has invalid port_id %u %s\n",
 				port_np, port_id, port_np->name);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto of_node_put;
 		}
 
 		port = am65_common_get_port(common, port_id);
@@ -1746,8 +1747,10 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 				(AM65_CPSW_NU_FRAM_PORT_OFFSET * (port_id - 1));
 
 		port->slave.mac_sl = cpsw_sl_get("am65", dev, port->port_base);
-		if (IS_ERR(port->slave.mac_sl))
-			return PTR_ERR(port->slave.mac_sl);
+		if (IS_ERR(port->slave.mac_sl)) {
+			ret = PTR_ERR(port->slave.mac_sl);
+			goto of_node_put;
+		}
 
 		port->disabled = !of_device_is_available(port_np);
 		if (port->disabled)
@@ -1758,7 +1761,7 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 			ret = PTR_ERR(port->slave.ifphy);
 			dev_err(dev, "%pOF error retrieving port phy: %d\n",
 				port_np, ret);
-			return ret;
+			goto of_node_put;
 		}
 
 		port->slave.mac_only =
@@ -1767,10 +1770,12 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 		/* get phy/link info */
 		if (of_phy_is_fixed_link(port_np)) {
 			ret = of_phy_register_fixed_link(port_np);
-			if (ret)
-				return dev_err_probe(dev, ret,
+			if (ret) {
+				ret = dev_err_probe(dev, ret,
 						     "failed to register fixed-link phy %pOF\n",
 						     port_np);
+				goto of_node_put;
+			}
 			port->slave.phy_node = of_node_get(port_np);
 		} else {
 			port->slave.phy_node =
@@ -1780,14 +1785,15 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 		if (!port->slave.phy_node) {
 			dev_err(dev,
 				"slave[%d] no phy found\n", port_id);
-			return -ENODEV;
+			ret = -ENODEV;
+			goto of_node_put;
 		}
 
 		ret = of_get_phy_mode(port_np, &port->slave.phy_if);
 		if (ret) {
 			dev_err(dev, "%pOF read phy-mode err %d\n",
 				port_np, ret);
-			return ret;
+			goto of_node_put;
 		}
 
 		mac_addr = of_get_mac_address(port_np);
@@ -1804,6 +1810,11 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 	of_node_put(node);
 
 	return 0;
+
+of_node_put:
+	of_node_put(port_np);
+	of_node_put(node);
+	return ret;
 }
 
 static void am65_cpsw_pcpu_stats_free(void *data)
-- 
2.39.2