fuse: clean up fuse_mount destruction

1. call fuse_mount_destroy() for open coded variants

2. before deactivate_locked_super() don't need fuse_mount destruction since
that will now be done (if ->s_fs_info is not cleared)

3. rearrange fuse_mount setup in fuse_get_tree_submount() so that the
regular pattern can be used

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

1 files changed, 2 insertions, 7 deletions

diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index fa80d250c802..94fc874f5de7 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -1456,19 +1456,14 @@ static int virtio_fs_get_tree(struct fs_context *fsc)
 
 	fsc->s_fs_info = fm;
 	sb = sget_fc(fsc, virtio_fs_test_super, set_anon_super_fc);
-	if (fsc->s_fs_info) {
-		fuse_conn_put(fc);
-		kfree(fm);
-	}
+	if (fsc->s_fs_info)
+		fuse_mount_destroy(fm);
 	if (IS_ERR(sb))
 		return PTR_ERR(sb);
 
 	if (!sb->s_root) {
 		err = virtio_fs_fill_super(sb, fsc);
 		if (err) {
-			fuse_conn_put(fc);
-			kfree(fm);
-			sb->s_fs_info = NULL;
 			deactivate_locked_super(sb);
 			return err;
 		}