[PATCH ethtool] rxclass: Fix return code in rxclass_rule_ins

[David Ahern <dsahern@kernel.org>]

ethtool is not exiting non-0 when -N fails. e.g.,

$ sudo ethtool -N eth0 flow-type tcp4 src-ip 1.2.3.4 action 3 loc 1023
rmgr: Cannot insert RX class rule: No such device
$ echo $?
0

Update rxclass_rule_ins to return err.

Fixes: 8d63f72ccdcb ("Add RX packet classification interface")
Cc: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
---
 rxclass.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rxclass.c b/rxclass.c
index 6cf81fdafc85..66cf00ba7728 100644
--- a/rxclass.c
+++ b/rxclass.c
@@ -598,7 +598,7 @@ int rxclass_rule_ins(struct cmd_context *ctx,
 	else if (loc & RX_CLS_LOC_SPECIAL)
 		printf("Added rule with ID %d\n", nfccmd.fs.location);
 
-	return 0;
+	return err;
 }
 
 int rxclass_rule_del(struct cmd_context *ctx, __u32 loc)
-- 
2.25.1