Fix yamaha discovery (#64056)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/components/yamaha/media_player.py

@@ -108,10 +108,10 @@ class YamahaConfigInfo:
         self.name = config.get(CONF_NAME)
         self.host = config.get(CONF_HOST)
         self.ctrl_url: str | None = f"http://{self.host}:80/YamahaRemoteControl/ctrl"
-        self.source_ignore = config[CONF_SOURCE_IGNORE]
-        self.source_names = config[CONF_SOURCE_NAMES]
-        self.zone_ignore = config[CONF_ZONE_IGNORE]
-        self.zone_names = config[CONF_ZONE_NAMES]
+        self.source_ignore = config.get(CONF_SOURCE_IGNORE)
+        self.source_names = config.get(CONF_SOURCE_NAMES)
+        self.zone_ignore = config.get(CONF_ZONE_IGNORE)
+        self.zone_names = config.get(CONF_ZONE_NAMES)
         self.from_discovery = False
         if discovery_info is not None:
             self.name = discovery_info.get("name")
@@ -161,7 +161,7 @@ async def async_setup_platform(
 
     entities = []
     for receiver in receivers:
-        if receiver.zone in config_info.zone_ignore:
+        if config_info.zone_ignore and receiver.zone in config_info.zone_ignore:
             continue
 
         entity = YamahaDevice(

tests/components/yamaha/test_media_player.py

@@ -74,12 +74,6 @@ async def test_setup_no_host(hass, device, main_zone):
 
 async def test_setup_discovery(hass, device, main_zone):
     """Test set up integration via discovery."""
-    with patch("rxv.find", return_value=[device]):
-        assert await async_setup_component(
-            hass, "media_player", {"media_player": {"platform": "yamaha"}}
-        )
-        await hass.async_block_till_done()
-
     discovery_info = {
         "name": "Yamaha Receiver",
         "model_name": "Yamaha",