net_sched: return nla_nest_end() instead of skb->len

nla_nest_end() already has return skb->len, so replace
return skb->len with return nla_nest_end instead().

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c
index bce1665..62871c1 100644
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -100,8 +100,7 @@
 	nest = nla_nest_start(skb, TCA_OPTIONS);
 	if (nest == NULL)
 		goto nla_put_failure;
-	nla_nest_end(skb, nest);
-	return skb->len;
+	return nla_nest_end(skb, nest);
 
 nla_put_failure:
 	nla_nest_cancel(skb, nest);