btrfs-progs: qgroup show: refine error messages

When qgroup show is called on a filesystem that does not have quotas
enabled, the error message is very unclear:

  ERROR: can't perform the search - No such file or directory
  ERROR: can't list qgroups: No such file or director

Remove the error from low level helper and let the command handler
decide what to print.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/qgroup.c b/qgroup.c
index 21526cec..fffdbb12 100644
--- a/qgroup.c
+++ b/qgroup.c
@@ -1064,11 +1064,9 @@ static int __qgroups_search(int fd, struct qgroup_lookup *qgroup_lookup)
 
 	while (1) {
 		ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
-		if (ret < 0) {
-			error("cannot perform the search: %s",
-					strerror(errno));
+		if (ret < 0)
 			return -errno;
-		}
+
 		/* the ioctl returns the number of item it found in nr_items */
 		if (sk->nr_items == 0)
 			break;