[PATCH 5.15 071/132] net: hinic: fix memory leak when reading function table

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From: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>

[ Upstream commit 4c1f602df8956bc0decdafd7e4fc7eef50c550b1 ]

When the input parameter idx meets the expected case option in
hinic_dbg_get_func_table(), read_data is not released. Fix it.

Fixes: 5215e16244ee ("hinic: add support to query function table")
Signed-off-by: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 .../net/ethernet/huawei/hinic/hinic_debugfs.c  | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
index 19eb839177ec..061952c6c21a 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
@@ -85,6 +85,7 @@ static int hinic_dbg_get_func_table(struct hinic_dev *nic_dev, int idx)
 	struct tag_sml_funcfg_tbl *funcfg_table_elem;
 	struct hinic_cmd_lt_rd *read_data;
 	u16 out_size = sizeof(*read_data);
+	int ret = ~0;
 	int err;
 
 	read_data = kzalloc(sizeof(*read_data), GFP_KERNEL);
@@ -111,20 +112,25 @@ static int hinic_dbg_get_func_table(struct hinic_dev *nic_dev, int idx)
 
 	switch (idx) {
 	case VALID:
-		return funcfg_table_elem->dw0.bs.valid;
+		ret = funcfg_table_elem->dw0.bs.valid;
+		break;
 	case RX_MODE:
-		return funcfg_table_elem->dw0.bs.nic_rx_mode;
+		ret = funcfg_table_elem->dw0.bs.nic_rx_mode;
+		break;
 	case MTU:
-		return funcfg_table_elem->dw1.bs.mtu;
+		ret = funcfg_table_elem->dw1.bs.mtu;
+		break;
 	case RQ_DEPTH:
-		return funcfg_table_elem->dw13.bs.cfg_rq_depth;
+		ret = funcfg_table_elem->dw13.bs.cfg_rq_depth;
+		break;
 	case QUEUE_NUM:
-		return funcfg_table_elem->dw13.bs.cfg_q_num;
+		ret = funcfg_table_elem->dw13.bs.cfg_q_num;
+		break;
 	}
 
 	kfree(read_data);
 
-	return ~0;
+	return ret;
 }
 
 static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count,
-- 
2.35.1






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