[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/cls_tcindex.c b/net/sched/cls_tcindex.c
index ed8023944fe5..6b84d276e5ac 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -350,6 +350,7 @@ tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle,
         struct nlattr *tb[TCA_TCINDEX_MAX + 1];
         struct tcindex_data *p = PRIV(tp);
         struct tcindex_filter_result *r = (struct tcindex_filter_result *) *arg;
+        int err;
 
         pr_debug("tcindex_change(tp %p,handle 0x%08x,tca %p,arg %p),opt %p,"
             "p %p,r %p,*arg 0x%lx\n",
@@ -358,8 +359,9 @@ tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle,
         if (!opt)
                 return 0;
 
-        if (nla_parse_nested(tb, TCA_TCINDEX_MAX, opt, NULL) < 0)
-                return -EINVAL;
+        err = nla_parse_nested(tb, TCA_TCINDEX_MAX, opt, NULL);
+        if (err < 0)
+                return err;
 
         return tcindex_set_parms(tp, base, handle, p, r, tb, tca[TCA_RATE]);
 }