ALSA: usb-audio: Avoid multiple assignments in mixer_quirks

[ Upstream commit 03ddd3b ]

Handle report from checkpatch.pl:

  CHECK: multiple assignments should be avoided

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-6-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: cristicc

sound/usb/mixer_quirks.c

@@ -1592,7 +1592,8 @@ static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
 	unsigned int pval, pval_old;
 	int err;
 
-	pval = pval_old = kcontrol->private_value;
+	pval = kcontrol->private_value;
+	pval_old = pval;
 	pval &= 0xfffff0f0;
 	pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
 	pval |= (ucontrol->value.iec958.status[0] & 0x0f);