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

[ Upstream commit ee4f52a8de2c6f78b01f10b4c330867d88c1653a ]

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

Fixes: f8ed289fab84 ("bridge: vlan: use br_vlan_(get|put)_master to deal with refcounts")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/1607071737-33875-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index e24a74884768c11c66eea6b52ebc219e8cfa4da0..830ff7bba5e323a0bb871cd279c21732f121eb02 100644 (file)
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -241,8 +241,10 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
                }
 
                masterv = br_vlan_get_master(br, v->vid);
-               if (!masterv)
+               if (!masterv) {
+                       err = -ENOMEM;
                        goto out_filt;
+               }
                v->brvlan = masterv;
                v->stats = masterv->stats;
        }