[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>
diff --git a/net/sched/ematch.c b/net/sched/ematch.c
index 72d9b27..d2b480f 100644
--- a/net/sched/ematch.c
+++ b/net/sched/ematch.c
@@ -301,7 +301,7 @@
int tcf_em_tree_validate(struct tcf_proto *tp, struct nlattr *nla,
struct tcf_ematch_tree *tree)
{
- int idx, list_len, matches_len, err = -EINVAL;
+ int idx, list_len, matches_len, err;
struct nlattr *tb[TCA_EMATCH_TREE_MAX + 1];
struct nlattr *rt_match, *rt_hdr, *rt_list;
struct tcf_ematch_tree_hdr *tree_hdr;
@@ -312,9 +312,11 @@
return 0;
}
- if (nla_parse_nested(tb, TCA_EMATCH_TREE_MAX, nla, NULL) < 0)
+ err = nla_parse_nested(tb, TCA_EMATCH_TREE_MAX, nla, NULL);
+ if (err < 0)
goto errout;
+ err = -EINVAL;
rt_hdr = tb[TCA_EMATCH_TREE_HDR];
rt_list = tb[TCA_EMATCH_TREE_LIST];