net: fealnx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles

dev_consume_skb_irq() should be called in intr_handler() when skb
xmit done. It makes drop profiles(dropwatch, perf) more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/fealnx.c

@@ -1531,7 +1531,7 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
 			/* Free the original skb. */
 			pci_unmap_single(np->pci_dev, np->cur_tx->buffer,
 				np->cur_tx->skbuff->len, PCI_DMA_TODEVICE);
-			dev_kfree_skb_irq(np->cur_tx->skbuff);
+			dev_consume_skb_irq(np->cur_tx->skbuff);
 			np->cur_tx->skbuff = NULL;
 			--np->really_tx_count;
 			if (np->cur_tx->control & TXLD) {