hippi: Fix a size used in a 'pci_free_consistent()' in an error handling path

The size used when calling 'pci_alloc_consistent()' and
'pci_free_consistent()' should match.

Fix it and have it consistent with the corresponding call in 'rr_close()'.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/hippi/rrunner.c

@@ -1242,7 +1242,7 @@ static int rr_open(struct net_device *dev)
 		rrpriv->info = NULL;
 	}
 	if (rrpriv->rx_ctrl) {
-		pci_free_consistent(pdev, sizeof(struct ring_ctrl),
+		pci_free_consistent(pdev, 256 * sizeof(struct ring_ctrl),
 				    rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma);
 		rrpriv->rx_ctrl = NULL;
 	}