net sched filters: fix filter handle ID in tfilter_notify_chain()

Should pass valid filter handle, not the netlink flags.

Fixes: 30a391a1 ("net sched filters: pass netlink message flags in event notification")
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/cls_api.c

@@ -112,7 +112,7 @@ static void tfilter_notify_chain(struct net *net, struct sk_buff *oskb,
 
 	for (it_chain = chain; (tp = rtnl_dereference(*it_chain)) != NULL;
 	     it_chain = &tp->next)
-		tfilter_notify(net, oskb, n, tp, n->nlmsg_flags, event, false);
+		tfilter_notify(net, oskb, n, tp, 0, event, false);
 }
 
 /* Select new prio value from the range, managed by kernel. */