[PATCH] paride_register(): shuffle return values

paride_register() returns 1 on success, 0 on failure and module init
code looks like

	static int __init foo_init(void)
	{
		return paride_register(&foo) - 1;
	}

which is not what one get used to. Converted to usual 0/-E convention.

In case of kbic driver, unwind registration. It was just

	return (paride_register(&k951)||paride_register(&k971))-1;

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/block/paride/on20.c b/drivers/block/paride/on20.c
index cc7e9f59..0173697 100644
--- a/drivers/block/paride/on20.c
+++ b/drivers/block/paride/on20.c
@@ -140,7 +140,7 @@
 
 static int __init on20_init(void)
 {
-	return paride_register(&on20)-1;
+	return paride_register(&on20);
 }
 
 static void __exit on20_exit(void)