Bluetooth: BAP: Broadcast Sink: Fix missing group relations

Adds missing assignments to stream->group and
cleanup of ep->broadcast_sink.

Signed-off-by: Emil Gydesen <[email protected]>

Author: Thalley

subsys/bluetooth/audio/bap_broadcast_sink.c

@@ -271,7 +271,9 @@ static void broadcast_sink_set_ep_state(struct bt_bap_ep *ep, uint8_t state)
 			bt_bap_iso_unbind_ep(ep->iso, ep);
 			stream->ep = NULL;
 			stream->codec_cfg = NULL;
+			stream->group = NULL;
 			ep->stream = NULL;
+			ep->broadcast_sink = NULL;
 		}
 	}
 }
@@ -1001,6 +1003,7 @@ static int bt_bap_broadcast_sink_setup_stream(struct bt_bap_broadcast_sink *sink
 
 	bt_bap_stream_attach(NULL, stream, ep, codec_cfg);
 	stream->qos = &sink->qos_cfg;
+	stream->group = sink;
 
 	return 0;
 }
@@ -1013,6 +1016,7 @@ static void broadcast_sink_cleanup_streams(struct bt_bap_broadcast_sink *sink)
 		if (stream->ep != NULL) {
 			bt_bap_iso_unbind_ep(stream->ep->iso, stream->ep);
 			stream->ep->stream = NULL;
+			stream->ep->broadcast_sink = NULL;
 			stream->ep = NULL;
 		}