make blkdev_put() return void

same story as with the previous patches - note that return
value of blkdev_close() is lost, since there's nowhere the
caller (__fput()) could return it to.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 24a146b..94cc84d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -703,22 +703,19 @@
 /*
  * Release the journal device
  */
-static int ext4_blkdev_put(struct block_device *bdev)
+static void ext4_blkdev_put(struct block_device *bdev)
 {
-	return blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+	blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
 }
 
-static int ext4_blkdev_remove(struct ext4_sb_info *sbi)
+static void ext4_blkdev_remove(struct ext4_sb_info *sbi)
 {
 	struct block_device *bdev;
-	int ret = -ENODEV;
-
 	bdev = sbi->journal_bdev;
 	if (bdev) {
-		ret = ext4_blkdev_put(bdev);
+		ext4_blkdev_put(bdev);
 		sbi->journal_bdev = NULL;
 	}
-	return ret;
 }
 
 static inline struct inode *orphan_list_entry(struct list_head *l)