net: bridge: Exit if multicast_init_stats fails

If br_multicast_init_stats() fails, there is no need to set lockdep
classes. Just return from the error path.
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/20240227182338.2739884-2-leitao@debian.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/bridge/br_device.c

@@ -135,10 +135,11 @@ static int br_dev_init(struct net_device *dev)
 		br_vlan_flush(br);
 		br_mdb_hash_fini(br);
 		br_fdb_hash_fini(br);
+		return err;
 	}
 
 	netdev_lockdep_set_classes(dev);
-	return err;
+	return 0;
 }
 
 static void br_dev_uninit(struct net_device *dev)