mlxsw: spectrum: Fix error return code in mlxsw_sp_port_create()

Fix to return a negative error code from the VID create error handling
case instead of 0, as done elsewhere in this function.

Fixes: c57529e1d5d8 ("mlxsw: spectrum: Replace vPorts with Port-VLAN")
Signed-off-by: Wei Yongjun <[e-mail]>
Reviewed-by: Ido Schimmel <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

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

···
 	if (IS_ERR(mlxsw_sp_port_vlan)) {
 		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create VID 1\n",
 			mlxsw_sp_port->local_port);
+		err = PTR_ERR(mlxsw_sp_port_vlan);
 		goto err_port_vlan_get;
 	}