ASoC: rt1011: remove redundant test

cppcheck warning:

sound/soc/codecs/rt1011.c:1994:6: style: Condition 'tx_slotnum' is
always true [knownConditionTrueFalse]
 if (tx_slotnum)
     ^
sound/soc/codecs/rt1011.c:1895:24: note: Assuming that condition
'!tx_slotnum' is not redundant
 if (tx_slotnum > 2 || !tx_slotnum) {
                       ^
sound/soc/codecs/rt1011.c:1994:6: note: Condition 'tx_slotnum' is
always true
if (tx_slotnum)
     ^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210302212527.55158-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt1011.c

@@ -1987,7 +1987,7 @@ static int rt1011_set_tdm_slot(struct snd_soc_dai *dai,
 		RT1011_TDM_I2S_DOCK_EN_1_MASK, tdm_en);
 	snd_soc_component_update_bits(component, RT1011_TDM2_SET_2,
 		RT1011_TDM_I2S_DOCK_EN_2_MASK, tdm_en);
-	if (tx_slotnum)
+
 	snd_soc_component_update_bits(component, RT1011_TDM_TOTAL_SET,
 		RT1011_ADCDAT1_PIN_CONFIG | RT1011_ADCDAT2_PIN_CONFIG,
 		RT1011_ADCDAT1_OUTPUT | RT1011_ADCDAT2_OUTPUT);