amd-xgbe: unwind on error in xgbe_mdio_register()

There is a typo here so we return directly instead of unwinding.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/amd/xgbe/xgbe-mdio.c

@@ -367,7 +367,7 @@ int xgbe_mdio_register(struct xgbe_prv_data *pdata)
 
 	if (!phydev->drv || (phydev->drv->phy_id == 0)) {
 		netdev_err(netdev, "phy_id not valid\n");
-		return -ENODEV;
+		ret = -ENODEV;
 		goto err_phy_connect;
 	}
 	DBGPR("  phy_connect_direct succeeded for PHY %s, link=%d\n",