dm: emc_endio returns void

emc_endio returns void:
  linux/drivers/md/dm-emc.c: In function 'emc_endio':
  linux/drivers/md/dm-emc.c:58: warning: 'return' with a value, in function returning void

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/md/dm-emc.c

@@ -54,8 +54,6 @@ static void emc_endio(struct bio *bio, int error)
 
 	/* request is freed in block layer */
 	free_bio(bio);
-
-	return 0;
 }
 
 static struct bio *get_failover_bio(struct dm_path *path, unsigned data_size)