r6040: fix race in transmit time stamping.

Signed-off-by: NRichard Cochran <richard.cochran@omicron.at>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/r6040.c

@@ -836,6 +836,9 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
 	descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
 		skb->data, skb->len, PCI_DMA_TODEVICE));
 	descptr->status = DSC_OWNER_MAC;
+
+	skb_tx_timestamp(skb);
+
 	/* Trigger the MAC to check the TX descriptor */
 	iowrite16(0x01, ioaddr + MTPR);
 	lp->tx_insert_ptr = descptr->vndescp;
@@ -846,8 +849,6 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
 
 	spin_unlock_irqrestore(&lp->lock, flags);
 
-	skb_tx_timestamp(skb);
-
 	return NETDEV_TX_OK;
 }