Use new reauth helpers in transmission (#128765)

homeassistant/components/transmission/config_flow.py

@@ -55,7 +55,6 @@ class TransmissionFlowHandler(ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
     MINOR_VERSION = 2
-    _reauth_entry: ConfigEntry | None
 
     @staticmethod
     @callback
@@ -100,9 +99,6 @@ class TransmissionFlowHandler(ConfigFlow, domain=DOMAIN):
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
         """Perform reauth upon an API authentication error."""
-        self._reauth_entry = self.hass.config_entries.async_get_entry(
-            self.context["entry_id"]
-        )
         return await self.async_step_reauth_confirm()
 
     async def async_step_reauth_confirm(
@@ -110,9 +106,9 @@ class TransmissionFlowHandler(ConfigFlow, domain=DOMAIN):
     ) -> ConfigFlowResult:
         """Confirm reauth dialog."""
         errors = {}
-        assert self._reauth_entry
+        reauth_entry = self._get_reauth_entry()
         if user_input is not None:
-            user_input = {**self._reauth_entry.data, **user_input}
+            user_input = {**reauth_entry.data, **user_input}
             try:
                 await get_api(self.hass, user_input)
 
@@ -121,16 +117,10 @@ class TransmissionFlowHandler(ConfigFlow, domain=DOMAIN):
             except (CannotConnect, UnknownError):
                 errors["base"] = "cannot_connect"
             else:
-                self.hass.config_entries.async_update_entry(
-                    self._reauth_entry, data=user_input
-                )
-                await self.hass.config_entries.async_reload(self._reauth_entry.entry_id)
-                return self.async_abort(reason="reauth_successful")
+                return self.async_update_reload_and_abort(reauth_entry, data=user_input)
 
         return self.async_show_form(
-            description_placeholders={
-                CONF_USERNAME: self._reauth_entry.data[CONF_USERNAME]
-            },
+            description_placeholders={CONF_USERNAME: reauth_entry.data[CONF_USERNAME]},
             step_id="reauth_confirm",
             data_schema=vol.Schema(
                 {