ASoC: SOF: sof-client: Use event-handler mutex consistently

Protect IPC RX and FW state handler list unregister/dispatch paths with
client_event_handler_mutex to match list registration and locking
comments.

Fixes: 5c19da3 ("ASoC: SOF: Use guard()/scoped_guard() for mutex locks where it makes sense")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>

Author: ujfalusi

sound/soc/sof/sof-client.c

@@ -612,7 +612,7 @@ void sof_client_unregister_ipc_rx_handler(struct sof_client_dev *cdev,
 	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
 	struct sof_ipc_event_entry *event;
 
-	guard(mutex)(&sdev->ipc_client_mutex);
+	guard(mutex)(&sdev->client_event_handler_mutex);
 
 	list_for_each_entry(event, &sdev->ipc_rx_handler_list, list) {
 		if (event->cdev == cdev && event->ipc_msg_type == ipc_msg_type) {
@@ -629,7 +629,7 @@ void sof_client_fw_state_dispatcher(struct snd_sof_dev *sdev)
 {
 	struct sof_state_event_entry *event;
 
-	guard(mutex)(&sdev->ipc_client_mutex);
+	guard(mutex)(&sdev->client_event_handler_mutex);
 
 	list_for_each_entry(event, &sdev->fw_state_handler_list, list)
 		event->callback(event->cdev, sdev->fw_state);
@@ -664,7 +664,7 @@ void sof_client_unregister_fw_state_handler(struct sof_client_dev *cdev)
 	struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
 	struct sof_state_event_entry *event;
 
-	guard(mutex)(&sdev->ipc_client_mutex);
+	guard(mutex)(&sdev->client_event_handler_mutex);
 
 	list_for_each_entry(event, &sdev->fw_state_handler_list, list) {
 		if (event->cdev == cdev) {