[PATCH v2] ALSA: scarlett2: Add error check after retrieving PEQ filter values

[Zhu Jun]

Add error check after retrieving PEQ filter values in scarlett2_update_filter_values
that ensure function returns error if PEQ filter value retrieval fails.

Signed-off-by: Zhu Jun <zhujun2@xxxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
---
V1 -> V2: 
- commit wit a dot
- add tag "Cc"
- delete a blank before the return value check

 sound/usb/mixer_scarlett2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c
index 1150cf104985..4cddf84db631 100644
--- a/sound/usb/mixer_scarlett2.c
+++ b/sound/usb/mixer_scarlett2.c
@@ -5613,6 +5613,8 @@ static int scarlett2_update_filter_values(struct usb_mixer_interface *mixer)
 			info->peq_flt_total_count *
 			SCARLETT2_BIQUAD_COEFFS,
 		peq_flt_values);
+	if (err < 0)
+		return err;
 
 	for (i = 0, dst_idx = 0; i < info->dsp_input_count; i++) {
 		src_idx = i *
-- 
2.17.1