ext4: add missing ext4_journal_stop()

Add missing ext4_journal_stop() in error handling.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: adilger@clusterfs.com
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mingming Cao <cmm@us.ibm.com>

fs/ext4/resize.c

@@ -1037,6 +1037,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
 		ext4_warning(sb, __FUNCTION__,
 			     "multiple resizers run on filesystem!");
 		unlock_super(sb);
+		ext4_journal_stop(handle);
 		err = -EBUSY;
 		goto exit_put;
 	}