diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c
index be70a57c1ff9a060021b8db620ce9d495b331a87..b62caa1c770c042fa7449f401bcb333b3defa485 100644
--- a/net/tipc/monitor.c
+++ b/net/tipc/monitor.c
@@ -794,10 +794,10 @@ int __tipc_nl_add_monitor(struct net *net, struct tipc_nl_msg *msg,
 	return 0;
 
 attr_msg_full:
+	read_unlock_bh(&mon->lock);
 	nla_nest_cancel(msg->skb, attrs);
 msg_full:
 	genlmsg_cancel(msg->skb, hdr);
-	read_unlock_bh(&mon->lock);
 
 	return -EMSGSIZE;
 }