[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, 4 insertions, 2 deletions

diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 92b6863e928d..dd5723670d31 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -749,14 +749,16 @@ static inline int meta_is_supported(struct meta_value *val)
 static int em_meta_change(struct tcf_proto *tp, void *data, int len,
                           struct tcf_ematch *m)
 {
-        int err = -EINVAL;
+        int err;
         struct nlattr *tb[TCA_EM_META_MAX + 1];
         struct tcf_meta_hdr *hdr;
         struct meta_match *meta = NULL;
 
-        if (nla_parse(tb, TCA_EM_META_MAX, data, len, NULL) < 0)
+        err = nla_parse(tb, TCA_EM_META_MAX, data, len, NULL);
+        if (err < 0)
                 goto errout;
 
+        err = -EINVAL;
         if (tb[TCA_EM_META_HDR] == NULL ||
             nla_len(tb[TCA_EM_META_HDR]) < sizeof(*hdr))
                 goto errout;