drivers/net: Remove unnecessary casts of netdev_priv

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 9f6aeef..2d4c4fc 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -1675,7 +1675,7 @@
 	platform_set_drvdata(pdev, NULL);
 
 	unregister_netdev(ndev);
-	dm9000_release_board(pdev, (board_info_t *) netdev_priv(ndev));
+	dm9000_release_board(pdev, netdev_priv(ndev));
 	free_netdev(ndev);		/* free device structure */
 
 	dev_dbg(&pdev->dev, "released and freed device\n");