diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d7fec89974cb3835a5ce612dfad97c053d320b3f..197352f23534806c67ab19e2f73112cd6626c674 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3200,6 +3200,7 @@ int __cold open_ctree(struct super_block *sb,
 	if (IS_ERR(fs_info->fs_root)) {
 		err = PTR_ERR(fs_info->fs_root);
 		btrfs_warn(fs_info, "failed to read fs tree: %d", err);
+		fs_info->fs_root = NULL;
 		goto fail_qgroup;
 	}