mlxsw: spectrum: Do not return an error in ndo_stop()

The return value is not checked by the networking stack. Allows us to
simplify a later patch.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

@@ -577,7 +577,8 @@ static int mlxsw_sp_port_stop(struct net_device *dev)
 	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 
 	netif_stop_queue(dev);
-	return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
+	mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
+	return 0;
 }
 
 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,