net: sched: change return value of ndo_setup_tc for driver supporting mqprio only

Change the return value from -EINVAL to -EOPNOTSUPP. The rest of the
drivers have it like that, so be aligned.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 1545b88..a78f72a5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7241,7 +7241,7 @@ static int bnxt_setup_tc(struct net_device *dev, enum tc_setup_type type,
 			 struct tc_to_netdev *ntc)
 {
 	if (type != TC_SETUP_MQPRIO)
-		return -EINVAL;
+		return -EOPNOTSUPP;
 
 	ntc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;