net: bridge: vlan: fix error return code in __vlan_add()

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

Fixes: f8ed289 ("bridge: vlan: use br_vlan_(get|put)_master to deal with refcounts")
Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Zhang Changzhong <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Zhang Changzhong

net/bridge/br_vlan.c

@@ -266,8 +266,10 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags,
 		}
 
 		masterv = br_vlan_get_master(br, v->vid, extack);
-		if (!masterv)
+		if (!masterv) {
+			err = -ENOMEM;
 			goto out_filt;
+		}
 		v->brvlan = masterv;
 		if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) {
 			v->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);