gianfar: Use netif_set_real_num_rx_queues()

Do not set num_tx_queues or real_num_tx_queues, since
alloc_etherdev_mq() does that.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index f30adbf..6180089 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -654,9 +654,8 @@
 	priv->node = ofdev->dev.of_node;
 	priv->ndev = dev;
 
-	dev->num_tx_queues = num_tx_qs;
-	dev->real_num_tx_queues = num_tx_qs;
 	priv->num_tx_queues = num_tx_qs;
+	netif_set_real_num_rx_queues(dev, num_rx_qs);
 	priv->num_rx_queues = num_rx_qs;
 	priv->num_grps = 0x0;