ASoC: msm: qdspv2: add result check when audio process fail

A audio_process_event_req is not always to success. Therefore,
check the return value for audio_process_event_req, and
initializ usr_evt before using it.

Bug: 35764875
CRs-Fixed: 2029798
Change-Id: I4adf682575f5f9233a1a1a533f9c6361af8a5bcf
Signed-off-by: kunleiz <kunleiz@codeaurora.org>

drivers/misc/qcom/qdsp6v2/audio_utils_aio.c

@@ -841,6 +841,7 @@ static long audio_aio_process_event_req_compat(struct q6audio_aio *audio,
 	long rc;
 	struct msm_audio_event32 usr_evt_32;
 	struct msm_audio_event usr_evt;
+	memset(&usr_evt, 0, sizeof(struct msm_audio_event));
 
 	if (copy_from_user(&usr_evt_32, arg,
 				sizeof(struct msm_audio_event32))) {
@@ -850,6 +851,11 @@ static long audio_aio_process_event_req_compat(struct q6audio_aio *audio,
 	usr_evt.timeout_ms = usr_evt_32.timeout_ms;
 
 	rc = audio_aio_process_event_req_common(audio, &usr_evt);
+	if (rc < 0) {
+		pr_err("%s: audio process event failed, rc = %ld",
+			__func__, rc);
+		return rc;
+	}
 
 	usr_evt_32.event_type = usr_evt.event_type;
 	switch (usr_evt_32.event_type) {