mlxsw: spectrum: fix some error handling

The "err = " assignment is missing here.

Fixes: 0d65fc13 ('mlxsw: spectrum: Implement LAG port join/leave')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -2091,7 +2091,7 @@ static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 	err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
 	if (err)
 		return err;
-	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
+	err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
 	if (err)
 		return err;