bridge: fix coverity false positive report

Fix Coverity Defect 1532481 reporting a Resource leak when
!bm->node.avl.key is false in bridge_hotplug_add.

This is not a real issue, since bm->node.avl.key is always NULL for newly
allocated entries and guaranteed to be non-NULL for entries returned by
vlist_find.

Fixes: edf3aced9f9a ("bridge: add support for adding vlan ranges via hotplug")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 5 insertions, 2 deletions

diff --git a/bridge.c b/bridge.c
index 471c651..2e9cca3 100644
--- a/bridge.c
+++ b/bridge.c
@@ -930,12 +930,15 @@ bridge_hotplug_add(struct device *dev, struct device *member, struct blob_attr *
 {
 	struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
 	struct bridge_member *bm;
+	bool new_entry = false;
 
 	bm = vlist_find(&bst->members, member->ifname, bm, node);
-	if (!bm)
+	if (!bm) {
+	    new_entry = true;
 	    bm = bridge_alloc_member(bst, member->ifname, member, true);
+	}
 	bridge_hotplug_set_member_vlans(bst, vlan, member->ifname, bm, true);
-	if (!bm->node.avl.key)
+	if (new_entry)
 		bridge_insert_member(bm, member->ifname);
 
 	return 0;