net: netsec: fix error handling in netsec_register_mdio()

[ Upstream commit 94423589689124e8cd145b38a1034be7f25835b2 ]

If phy_device_register() fails, phy_device_free() need be called to
put refcount, so memory of phy device and device name can be freed
in callback function.

If get_phy_device() fails, mdiobus_unregister() need be called,
or it will cause warning in mdiobus_free() and kobject is leaked.

Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221019064104.3228892-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index b0c5a44785fa4733e50ab64e8af69f71499518e5..386c8640381b8e2247d6fc4340b10ab1d5827ed3 100644 (file)
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -1961,11 +1961,13 @@ static int netsec_register_mdio(struct netsec_priv *priv, u32 phy_addr)
                        ret = PTR_ERR(priv->phydev);
                        dev_err(priv->dev, "get_phy_device err(%d)\n", ret);
                        priv->phydev = NULL;
+                       mdiobus_unregister(bus);
                        return -ENODEV;
                }
 
                ret = phy_device_register(priv->phydev);
                if (ret) {
+                       phy_device_free(priv->phydev);
                        mdiobus_unregister(bus);
                        dev_err(priv->dev,
                                "phy_device_register err(%d)\n", ret);