[PATCH] phy: ti: j721e-wiz: Fix device_node leak in wiz_get_lane_phy_types()

[Felix Gu]

The 'serdes' device_node is obtained using of_get_child_by_name(),
which increments the reference count. However, it is never put,
leading to a memory leak.

Use the __free(device_node) attribute to automatically decrement
the reference count when the 'serdes' variable goes out of scope.

Fixes: 7ae14cf581f2 ("phy: ti: j721e-wiz: Implement DisplayPort mode to the wiz driver")
Signed-off-by: Felix Gu <ustc.gu@xxxxxxxxx>
---
 drivers/phy/ti/phy-j721e-wiz.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index 12a19bf2875c..904541e9138e 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1407,9 +1407,8 @@ MODULE_DEVICE_TABLE(of, wiz_id_table);
 
 static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
 {
-	struct device_node *serdes;
-
-	serdes = of_get_child_by_name(dev->of_node, "serdes");
+	struct device_node *serdes __free(device_node) =
+		of_get_child_by_name(dev->of_node, "serdes");
 	if (!serdes) {
 		dev_err(dev, "%s: Getting \"serdes\"-node failed\n", __func__);
 		return -EINVAL;

---
base-commit: 193579fe01389bc21aff0051d13f24e8ea95b47d
change-id: 20260204-wiz-9a67604a034f

Best regards,
-- 
Felix Gu <ustc.gu@xxxxxxxxx>