drivers/net/tg3.c: remove dead code

@@ -2982,7 +2982,6 @@ static int tigon3_4gb_hwbug_workaround(s
 	struct sk_buff *new_skb = skb_copy(skb, GFP_ATOMIC);
 	dma_addr_t new_addr;
 	u32 entry = *start;
-	int i;
 
 	if (!new_skb) {
 		dev_kfree_skb(skb);

@@ -2999,23 +2998,16 @@ static int tigon3_4gb_hwbug_workaround(s
 	*start = NEXT_TX(entry);
 
 	/* Now clean up the sw ring entries. */
-	i = 0;
 	while (entry != last_plus_one) {
-		int len;
+		int len = skb_headlen(skb);
 
-		if (i == 0)
-			len = skb_headlen(skb);
-		else
-			len = skb_shinfo(skb)->frags[i-1].size;
 		pci_unmap_single(tp->pdev,
 				 pci_unmap_addr(&tp->tx_buffers[entry], mapping),
 				 len, PCI_DMA_TODEVICE);
-		if (i == 0) {
-			tp->tx_buffers[entry].skb = new_skb;
-			pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, new_addr);
-		} else {
-			tp->tx_buffers[entry].skb = NULL;
-		}
+
+		tp->tx_buffers[entry].skb = new_skb;
+		pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, new_addr);
+
 		entry = NEXT_TX(entry);
 	}