ASoC: Fix checkpatch issues in AD1938

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ad1938.c

@@ -45,7 +45,6 @@
 struct ad1938_priv {
 	struct snd_soc_codec codec;
 	u8 reg_cache[AD1938_NUM_REGS];
-
 };
 
 static struct snd_soc_codec *ad1938_codec;
@@ -136,7 +135,7 @@ static int ad1938_set_tdm_slot(struct snd_soc_dai *dai,
 	dac_reg &= ~AD1938_DAC_CHAN_MASK;
 	adc_reg &= ~AD1938_ADC_CHAN_MASK;
 
-	switch(slots) {
+	switch (slots) {
 	case 2:
 		dac_reg |= AD1938_DAC_2_CHANNELS << AD1938_DAC_CHAN_SHFT;
 		adc_reg |= AD1938_ADC_2_CHANNELS << AD1938_ADC_CHAN_SHFT;
@@ -324,7 +323,7 @@ static int ad1938_write_reg(struct snd_soc_codec *codec, unsigned int reg,
 	u8 *reg_cache = codec->reg_cache;
 	int ret = 0;
 
-	if(value != reg_cache[reg]) {
+	if (value != reg_cache[reg]) {
 		uint8_t buf[AD1938_SPI_BUFLEN];
 		struct spi_transfer t = {
 			.tx_buf = buf,
@@ -337,7 +336,8 @@ static int ad1938_write_reg(struct snd_soc_codec *codec, unsigned int reg,
 		buf[2] = value;
 		spi_message_init(&m);
 		spi_message_add_tail(&t, &m);
-		if((ret = spi_sync(codec->control_data, &m)) == 0)
+		ret = spi_sync(codec->control_data, &m);
+		if (ret == 0)
 			reg_cache[reg] = value;
 	}