[S390] qdio: fix access beyond ARRAY_SIZE of irq_ptr->{in,out}put_qs

Do not go beyond ARRAY_SIZE of irq_ptr->{in,out}put_qs

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/cio/qdio_main.c

@@ -1494,7 +1494,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
 
 	if ((bufnr > QDIO_MAX_BUFFERS_PER_Q) ||
 	    (count > QDIO_MAX_BUFFERS_PER_Q) ||
-	    (q_nr > QDIO_MAX_QUEUES_PER_IRQ))
+	    (q_nr >= QDIO_MAX_QUEUES_PER_IRQ))
 		return -EINVAL;
 
 	if (!count)