Btrfs: fix some error codes in btrfs_qgroup_inherit()

These are returning zero when it should be returning a negative error
code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index bc424ae..229ef89 100644 (file)
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1369,8 +1369,10 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
 
        if (srcid) {
                srcgroup = find_qgroup_rb(fs_info, srcid);
-               if (!srcgroup)
+               if (!srcgroup) {
+                       ret = -EINVAL;
                        goto unlock;
+               }
                dstgroup->rfer = srcgroup->rfer - level_size;
                dstgroup->rfer_cmpr = srcgroup->rfer_cmpr - level_size;
                srcgroup->excl = level_size;
@@ -1379,8 +1381,10 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
                qgroup_dirty(fs_info, srcgroup);
        }
 
-       if (!inherit)
+       if (!inherit) {
+               ret = -EINVAL;
                goto unlock;
+       }
 
        i_qgroups = (u64 *)(inherit + 1);
        for (i = 0; i < inherit->num_qgroups; ++i) {