drivers: net: xgene-v2: Fix error return code in xge_mdio_config()

Fix to return error code -ENODEV from the no PHY found error
handling case instead of 0, as done elsewhere in this function.
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/apm/xgene-v2/mdio.c

@@ -135,6 +135,7 @@ int xge_mdio_config(struct net_device *ndev)
 	phydev = phy_find_first(mdio_bus);
 	if (!phydev) {
 		dev_err(dev, "no PHY found\n");
+		ret = -ENODEV;
 		goto err;
 	}
 	phydev = phy_connect(ndev, phydev_name(phydev),