net: sgi: ioc3-eth: Fix the size used in some 'dma_free_coherent()' calls

Update the size used in 'dma_free_coherent()' in order to match the one
used in the corresponding 'dma_alloc_coherent()'.

Fixes: 369a782a ("net: sgi: ioc3-eth: ensure tx ring is 16k aligned.")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sgi/ioc3-eth.c

@@ -951,7 +951,7 @@ static int ioc3eth_probe(struct platform_device *pdev)
 		dma_free_coherent(ip->dma_dev, RX_RING_SIZE, ip->rxr,
 				  ip->rxr_dma);
 	if (ip->tx_ring)
-		dma_free_coherent(ip->dma_dev, TX_RING_SIZE, ip->tx_ring,
+		dma_free_coherent(ip->dma_dev, TX_RING_SIZE + SZ_16K - 1, ip->tx_ring,
 				  ip->txr_dma);
 out_free:
 	free_netdev(dev);
@@ -964,7 +964,7 @@ static int ioc3eth_remove(struct platform_device *pdev)
 	struct ioc3_private *ip = netdev_priv(dev);
 
 	dma_free_coherent(ip->dma_dev, RX_RING_SIZE, ip->rxr, ip->rxr_dma);
-	dma_free_coherent(ip->dma_dev, TX_RING_SIZE, ip->tx_ring, ip->txr_dma);
+	dma_free_coherent(ip->dma_dev, TX_RING_SIZE + SZ_16K - 1, ip->tx_ring, ip->txr_dma);
 
 	unregister_netdev(dev);
 	del_timer_sync(&ip->ioc3_timer);