[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, 6 insertions, 2 deletions

diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index be007bb31b59..5a512d4dc37c 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -45,13 +45,17 @@ static int tcf_nat_init(struct nlattr *nla, struct nlattr *est,
 {
         struct nlattr *tb[TCA_NAT_MAX + 1];
         struct tc_nat *parm;
-        int ret = 0;
+        int ret = 0, err;
         struct tcf_nat *p;
         struct tcf_common *pc;
 
-        if (nla == NULL || nla_parse_nested(tb, TCA_NAT_MAX, nla, NULL) < 0)
+        if (nla == NULL)
                 return -EINVAL;
 
+        err = nla_parse_nested(tb, TCA_NAT_MAX, nla, NULL);
+        if (err < 0)
+                return err;
+
         if (tb[TCA_NAT_PARMS] == NULL ||
             nla_len(tb[TCA_NAT_PARMS]) < sizeof(*parm))
                 return -EINVAL;