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/cmdlinepart.c b/drivers/mtd/cmdlinepart.c
index 721caeb..3e829b3 100644
--- a/drivers/mtd/cmdlinepart.c
+++ b/drivers/mtd/cmdlinepart.c
@@ -395,7 +395,8 @@
 {
 	if (mtdparts)
 		mtdpart_setup(mtdparts);
-	return register_mtd_parser(&cmdline_parser);
+	register_mtd_parser(&cmdline_parser);
+	return 0;
 }
 
 static void __exit cmdline_parser_exit(void)