s390/qeth: remove redundant if-clause in RX poll code

Whenever all completed RX buffers have been processed
(ie. rx->b_count == 0), we call down to the HW layer to scan for
additional buffers. If no further buffers are available, the code
breaks out of the while-loop.

So we never reach the 'process an RX buffer' step with rx->b_count == 0,
eliminate that check and one level of indentation.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core_main.c

@@ -5536,6 +5536,10 @@ static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
 	unsigned int work_done = 0;
 
 	while (budget > 0) {
+		struct qeth_qdio_buffer *buffer;
+		unsigned int skbs_done = 0;
+		bool done = false;
+
 		/* Fetch completed RX buffers: */
 		if (!card->rx.b_count) {
 			card->rx.qdio_err = 0;
@@ -5549,17 +5553,12 @@ static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
 		}
 
 		/* Process one completed RX buffer: */
-		if (card->rx.b_count) {
-			struct qeth_qdio_buffer *buffer;
-			unsigned int skbs_done = 0;
-			bool done = false;
-
 		buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 		if (!(card->rx.qdio_err &&
 		      qeth_check_qdio_errors(card, buffer->buffer,
 					     card->rx.qdio_err, "qinerr")))
-				skbs_done = qeth_extract_skbs(card, budget,
-							      buffer, &done);
+			skbs_done = qeth_extract_skbs(card, budget, buffer,
+						      &done);
 		else
 			done = true;
 
@@ -5568,19 +5567,16 @@ static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
 
 		if (done) {
 			QETH_CARD_STAT_INC(card, rx_bufs);
-				qeth_put_buffer_pool_entry(card,
-					buffer->pool_entry);
+			qeth_put_buffer_pool_entry(card, buffer->pool_entry);
 			qeth_queue_input_buffer(card, card->rx.b_index);
 			card->rx.b_count--;
 
 			/* Step forward to next buffer: */
-				card->rx.b_index =
-					QDIO_BUFNR(card->rx.b_index + 1);
+			card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
 			card->rx.buf_element = 0;
 			card->rx.e_offset = 0;
 		}
 	}
-	}
 
 	return work_done;
 }