[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_mirred.c b/net/sched/act_mirred.c
index db943a8c7388..6cb5e30dcf8c 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -62,12 +62,16 @@ static int tcf_mirred_init(struct nlattr *nla, struct nlattr *est,
         struct tcf_mirred *m;
         struct tcf_common *pc;
         struct net_device *dev = NULL;
-        int ret = 0;
+        int ret = 0, err;
         int ok_push = 0;
 
-        if (nla == NULL || nla_parse_nested(tb, TCA_MIRRED_MAX, nla, NULL) < 0)
+        if (nla == NULL)
                 return -EINVAL;
 
+        err = nla_parse_nested(tb, TCA_MIRRED_MAX, nla, NULL);
+        if (err < 0)
+                return err;
+
         if (tb[TCA_MIRRED_PARMS] == NULL ||
             nla_len(tb[TCA_MIRRED_PARMS]) < sizeof(*parm))
                 return -EINVAL;