[PKT_SCHED]: Return ENOENT if qdisc module is unavailable

Return ENOENT if qdisc module is unavailable
Signed-off-by: NJamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sched/sch_api.c

@@ -430,7 +430,7 @@ qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
 	}
 #endif
 
-	err = -EINVAL;
+	err = -ENOENT;
 	if (ops == NULL)
 		goto err_out;