xfs: don't return _QUERY_ABORT from xfs_rmap_has_other_keys

The xfs_rmap_has_other_keys helper aborts the iteration as soon as it
has an answer.  Don't let this abort leak out to callers.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

fs/xfs/libxfs/xfs_rmap.c

@@ -2540,8 +2540,11 @@ xfs_rmap_has_other_keys(
 
 	error = xfs_rmap_query_range(cur, &low, &high,
 			xfs_rmap_has_other_keys_helper, &rks);
-	*has_rmap = rks.has_rmap;
+	if (error < 0)
 		return error;
+
+	*has_rmap = rks.has_rmap;
+	return 0;
 }
 
 const struct xfs_owner_info XFS_RMAP_OINFO_SKIP_UPDATE = {