mtd: make register_mtd_parser return void

register_mtd_parser never fails; hence make it return void.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
diff --git a/drivers/mtd/ar7part.c b/drivers/mtd/ar7part.c
index ddc0a42..7c9172a 100644
--- a/drivers/mtd/ar7part.c
+++ b/drivers/mtd/ar7part.c
@@ -139,7 +139,8 @@
 
 static int __init ar7_parser_init(void)
 {
-	return register_mtd_parser(&ar7_parser);
+	register_mtd_parser(&ar7_parser);
+	return 0;
 }
 
 static void __exit ar7_parser_exit(void)