[patch] rocker: fix rocker_world_port_obj_vlan_add()

[Dan Carpenter]

We were changing return values and accidentally made
rocker_world_port_obj_vlan_add() into a no-op.

Fixes: fccd84d44912 ('rocker: return -EOPNOTSUPP for undefined world ops')
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/net/ethernet/rocker/rocker_main.c 
b/drivers/net/ethernet/rocker/rocker_main.c
index acafbf8..28b775e 100644
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -1598,7 +1598,6 @@ rocker_world_port_obj_vlan_add(struct rocker_port 
*rocker_port,
 
        if (!wops->port_obj_vlan_add)
                return -EOPNOTSUPP;
-               return 0;
        return wops->port_obj_vlan_add(rocker_port, vlan, trans);
 }