Move exporter installed check to top of update status

src/charm.py

@@ -125,6 +125,10 @@ def _on_update_status(self, _: EventBase) -> None:  # noqa: C901
             # The charm should be in BlockedStatus with install failed msg
             return  # type: ignore[unreachable]
 
+        if not self._stored.exporter_installed:  # type: ignore[truthy-function]
+            # The charm should be in BlockedStatus with exporter install failed msg
+            return  # type: ignore[unreachable]
+
         config_valid, config_valid_message = self.validate_exporter_configs()
         if not config_valid:
             self.model.unit.status = BlockedStatus(config_valid_message)
@@ -143,10 +147,6 @@ def _on_update_status(self, _: EventBase) -> None:  # noqa: C901
             self.model.unit.status = BlockedStatus(error_msg)
             return
 
-        if not self._stored.exporter_installed:  # type: ignore[truthy-function]
-            logger.warning("Exporter not installed")  # type: ignore[unreachable]
-            return
-
         if not self.exporter.check_health():
             logger.warning("Exporter health check - failed.")
             # if restart isn't successful, an ExporterError exception will be raised here