x86, olpc: Cocci spatch "ptr_ret.spatch"

diff -u -p a/arch/x86/platform/olpc/olpc.c b/arch/x86/platform/olpc/olpc.c
@@ -311,10 +311,7 @@ static int __init add_xo1_platform_devic
 		return PTR_ERR(pdev);
 
 	pdev = platform_device_register_simple("olpc-xo1", -1, NULL, 0);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
-
-	return 0;
+	return PTR_RET(pdev);
 }
 
 static int olpc_xo1_ec_probe(struct platform_device *pdev)