Do not skip if exited properly

Author: tibor-reiss

mmengine/testing/_internal/distributed.py

@@ -351,12 +351,13 @@ def _check_return_codes(self, elapsed_time) -> None:
             if first_process.exitcode == skip.exit_code:
                 raise unittest.SkipTest(skip.message)
 
-        # Skip the unittest since the raised error maybe not caused by
-        # the tested function. For example, in CI environment, the tested
-        # method could be terminated by system signal for the limited
-        # resources.
-        self.skipTest(f'Skip test {self._testMethodName} due to '
-                      'the program abort')
+        if first_process.exitcode != 0:
+            # Skip the unittest since the raised error maybe not caused by
+            # the tested function. For example, in CI environment, the tested
+            # method could be terminated by system signal for the limited
+            # resources.
+            self.skipTest(f'Skip test {self._testMethodName} due to '
+                          'the program abort')
 
     @property
     def is_master(self) -> bool: