pkt_sched: Stop using NLA_PUT*().

These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 93fdf13..5cfb160 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -127,7 +127,8 @@
 	nest = nla_nest_start(skb, a->order);
 	if (nest == NULL)
 		goto nla_put_failure;
-	NLA_PUT_STRING(skb, TCA_KIND, a->ops->kind);
+	if (nla_put_string(skb, TCA_KIND, a->ops->kind))
+		goto nla_put_failure;
 	for (i = 0; i < (hinfo->hmask + 1); i++) {
 		p = hinfo->htab[tcf_hash(i, hinfo->hmask)];
 
@@ -139,7 +140,8 @@
 			p = s_p;
 		}
 	}
-	NLA_PUT_U32(skb, TCA_FCNT, n_i);
+	if (nla_put_u32(skb, TCA_FCNT, n_i))
+		goto nla_put_failure;
 	nla_nest_end(skb, nest);
 
 	return n_i;
@@ -437,7 +439,8 @@
 	if (a->ops == NULL || a->ops->dump == NULL)
 		return err;
 
-	NLA_PUT_STRING(skb, TCA_KIND, a->ops->kind);
+	if (nla_put_string(skb, TCA_KIND, a->ops->kind))
+		goto nla_put_failure;
 	if (tcf_action_copy_stats(skb, a, 0))
 		goto nla_put_failure;
 	nest = nla_nest_start(skb, TCA_OPTIONS);