ASoC: tas2770: remove useless initialization

cppcheck warning:

sound/soc/codecs/tas2770.c:109:10: style: Variable 'ret' is assigned a
value that is never used. [unreadVariable]
 int ret = 0;
         ^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210312182246.5153-22-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/tas2770.c

@@ -106,7 +106,7 @@ static int tas2770_codec_suspend(struct snd_soc_component *component)
 static int tas2770_codec_resume(struct snd_soc_component *component)
 {
 	struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
-	int ret = 0;
+	int ret;
 
 	if (tas2770->sdz_gpio) {
 		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);