phy: ti: j721e-wiz: Fix device node reference leak in wiz_get_lane_phy_types()

[ Upstream commit 584b457f4166293bdfa50f930228e9fb91a38392 ]

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 reference leak.

Add the missing of_node_put() calls to ensure the reference count is
properly balanced.

Fixes: 7ae14cf581f2 ("phy: ti: j721e-wiz: Implement DisplayPort mode to the wiz driver")
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/20260212-wiz-v2-1-6e8bd4cc7a4a@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index ba31b0a1f7f79b957b4f1d34f4064be659b9bc35..77f18de6fdf62adb5d71209631f5ea107d1ddca5 100644 (file)
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1425,6 +1425,7 @@ static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
                        dev_err(dev,
                                "%s: Reading \"reg\" from \"%s\" failed: %d\n",
                                __func__, subnode->name, ret);
+                       of_node_put(serdes);
                        return ret;
                }
                of_property_read_u32(subnode, "cdns,num-lanes", &num_lanes);
@@ -1439,6 +1440,7 @@ static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
                }
        }
 
+       of_node_put(serdes);
        return 0;
 }