dp83640: Make use of skb_queue_purge instead of reimplementing the code

This change makes it so that dp83640_remove can use skb_queue_purge
instead of looping through itself to flush any entries out of the queue.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/dp83640.c

@@ -1136,19 +1136,15 @@ static void dp83640_remove(struct phy_device *phydev)
 	struct dp83640_clock *clock;
 	struct list_head *this, *next;
 	struct dp83640_private *tmp, *dp83640 = phydev->priv;
-	struct sk_buff *skb;
 
 	if (phydev->addr == BROADCAST_ADDR)
 		return;
 
 	enable_status_frames(phydev, false);
 	cancel_work_sync(&dp83640->ts_work);
 
-	while ((skb = skb_dequeue(&dp83640->rx_queue)) != NULL)
-		kfree_skb(skb);
-
-	while ((skb = skb_dequeue(&dp83640->tx_queue)) != NULL)
-		kfree_skb(skb);
+	skb_queue_purge(&dp83640->rx_queue);
+	skb_queue_purge(&dp83640->tx_queue);
 
 	clock = dp83640_clock_get(dp83640->clock);