alx: fix a double unlock in alx_probe()

We're not holding the lock at this point so "goto unlock;" should be
"goto unmap;"

Fixes: 4a5fe57e ("alx: use fine-grained locking instead of RTNL")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/atheros/alx/main.c

@@ -1859,7 +1859,7 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	err = register_netdev(netdev);
 	if (err) {
 		dev_err(&pdev->dev, "register netdevice failed\n");
-		goto out_unlock;
+		goto out_unmap;
 	}
 
 	netdev_info(netdev,