Make unregister_binfmt() return void

list_del() hardly can fail, so checking for return value is pointless
(and current code always return 0).

Nobody really cared that return value anyway.
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/ia64/ia32/binfmt_elf32.c

@@ -240,7 +240,7 @@ static int __init check_elf32_binfmt(void)
 {
 	if (cpu_uses_ia32el()) {
 		printk("Please use IA-32 EL for executing IA-32 binaries\n");
-		return unregister_binfmt(&elf_format);
+		unregister_binfmt(&elf_format);
 	}
 	return 0;
 }

fs/exec.c

@@ -81,12 +81,11 @@ int register_binfmt(struct linux_binfmt * fmt)
 
 EXPORT_SYMBOL(register_binfmt);
 
-int unregister_binfmt(struct linux_binfmt * fmt)
+void unregister_binfmt(struct linux_binfmt * fmt)
 {
 	write_lock(&binfmt_lock);
 	list_del(&fmt->lh);
 	write_unlock(&binfmt_lock);
-	return 0;
 }
 
 EXPORT_SYMBOL(unregister_binfmt);

include/linux/binfmts.h

@@ -73,7 +73,7 @@ struct linux_binfmt {
 };
 
 extern int register_binfmt(struct linux_binfmt *);
-extern int unregister_binfmt(struct linux_binfmt *);
+extern void unregister_binfmt(struct linux_binfmt *);
 
 extern int prepare_binprm(struct linux_binprm *);
 extern int __must_check remove_arg_zero(struct linux_binprm *);