ALSA: scarlett2: Add error check after retrieving PEQ filter values

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

Fixes: b64678eb ("ALSA: scarlett2: Add DSP controls")
Signed-off-by: Zhu Jun <zhujun2@cmss.chinamobile.com>
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20241009092305.8570-1-zhujun2@cmss.chinamobile.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

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 *