[PATCH 6.5 449/550] i3c: Fix potential refcount leak in i3c_master_register_new_i3c_devs

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6.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>

[ Upstream commit cab63f64887616e3c4e31cfd8103320be6ebc8d3 ]

put_device() needs to be called on failure of device_register()
to give up the reference initialized in it to avoid refcount leak.

Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230921082410.25548-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/i3c/master.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 08aeb69a78003..19071ff9eb753 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1521,9 +1521,11 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master)
 			desc->dev->dev.of_node = desc->boardinfo->of_node;
 
 		ret = device_register(&desc->dev->dev);
-		if (ret)
+		if (ret) {
 			dev_err(&master->dev,
 				"Failed to add I3C device (err = %d)\n", ret);
+			put_device(&desc->dev->dev);
+		}
 	}
 }
 
-- 
2.42.0






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