[NET_SCHED]: Propagate nla_parse return value

nla_parse() returns more detailed errno codes, propagate them back on
error.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index fee5282637cc..12693347d56a 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -104,9 +104,13 @@ static int tcf_ipt_init(struct nlattr *nla, struct nlattr *est,
         u32 hook = 0;
         u32 index = 0;
 
-        if (nla == NULL || nla_parse_nested(tb, TCA_IPT_MAX, nla, NULL) < 0)
+        if (nla == NULL)
                 return -EINVAL;
 
+        err = nla_parse_nested(tb, TCA_IPT_MAX, nla, NULL);
+        if (err < 0)
+                return err;
+
         if (tb[TCA_IPT_HOOK] == NULL ||
             nla_len(tb[TCA_IPT_HOOK]) < sizeof(u32))
                 return -EINVAL;