ASoC: soc-ops: remove useless assignment

cppcheck warning:

sound/soc/soc-ops.c:410:35: style: Variable 'val2' is assigned a value
that is never used. [unreadVariable]
 unsigned int val, val_mask, val2 = 0;
                                  ^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210218221921.88991-2-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-ops.c

@@ -407,7 +407,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 	int min = mc->min;
 	unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
 	int err = 0;
-	unsigned int val, val_mask, val2 = 0;
+	unsigned int val, val_mask, val2;
 
 	val_mask = mask << shift;
 	val = (ucontrol->value.integer.value[0] + min) & mask;