Fix factory validation order

Author: Imaad00

src/attr/_make.py

@@ -2325,10 +2325,15 @@ def _attrs_to_init_script(
                     "    "
                     + f"val = {init_factory_name}({maybe_self})"
                 )
-                lines.append(
-                    "    "
-                    + f"{validator_name}(self, a, val)"
-                )
+                if a.validator is not None:
+                    val_name = "__attr_validator_" + a.name
+                    attr_name_ref = "__attr_" + a.name
+                    lines.append(
+                        "    "
+                        + f"{val_name}(self, {attr_name_ref}, val)"
+                    )
+                    names_for_globals[val_name] = a.validator
+                    names_for_globals[attr_name_ref] = a
                 lines.append(
                     "    "
                     + fmt_setter(