[3.0.x] Fixed #31538 -- Fixed Meta.ordering validation lookups that are not transforms.

Regression in 440505cb2cadbe1a5b9fba246bcde6c04f51d07e.

Thanks Simon Meers for the report.
Backport of b73e66e75802f10cc34d4880714554cea54dbf49 from master

1 files changed, 3 insertions, 1 deletions

diff --git a/django/db/models/base.py b/django/db/models/base.py
index 3552dc5783..63801da3c2 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -1719,7 +1719,9 @@ class Model(metaclass=ModelBase):
                     else:
                         _cls = None
                 except (FieldDoesNotExist, AttributeError):
-                    if fld is None or fld.get_transform(part) is None:
+                    if fld is None or (
+                        fld.get_transform(part) is None and fld.get_lookup(part) is None
+                    ):
                         errors.append(
                             checks.Error(
                                 "'ordering' refers to the nonexistent field, "