fs/super.c: fix lru_list leak for real

Freeing ->s_{inode,dentry}_lru in deactivate_locked_super() is wrong;
the right place is destroy_super().  As it is, we leak them if sget()
decides that new superblock it has allocated (and never shown to
anybody) isn't needed and should be freed.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/super.c

@@ -264,6 +264,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
  */
 static inline void destroy_super(struct super_block *s)
 {
+	list_lru_destroy(&s->s_dentry_lru);
+	list_lru_destroy(&s->s_inode_lru);
 #ifdef CONFIG_SMP
 	free_percpu(s->s_files);
 #endif
@@ -323,8 +325,6 @@ void deactivate_locked_super(struct super_block *s)
 
 		/* caches are now gone, we can safely kill the shrinker now */
 		unregister_shrinker(&s->s_shrink);
-		list_lru_destroy(&s->s_dentry_lru);
-		list_lru_destroy(&s->s_inode_lru);
 
 		put_filesystem(fs);
 		put_super(s);