diff --git a/dsp/q6lsm.c b/dsp/q6lsm.c
index d55dfc313c39..d27bbac68e88 100644
--- a/dsp/q6lsm.c
+++ b/dsp/q6lsm.c
@@ -372,9 +372,9 @@ void q6lsm_client_free(struct lsm_client *client)
 		pr_err("%s: Invalid Session %d\n", __func__, client->session);
 		return;
 	}
-	mutex_lock(&session_lock);
 	apr_deregister(client->apr);
 	client->mmap_apr = NULL;
+	mutex_lock(&session_lock);
 	q6lsm_session_free(client);
 	q6lsm_mmap_apr_dereg();
 	mutex_destroy(&client->cmd_lock);