ALSA: i2c: Fixed 8 checkpatch errors

Fixed 8 checkpatch errors (ERROR: do not use assignment in if condition)
in sound/i2c/i2c.c.

Signed-off-by: Brian Waters <brianmwaters@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/i2c/i2c.c

@@ -98,7 +98,8 @@ int snd_i2c_bus_create(struct snd_card *card, const char *name,
 		bus->master = master;
 	}
 	strlcpy(bus->name, name, sizeof(bus->name));
-	if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &ops)) < 0) {
+	err = snd_device_new(card, SNDRV_DEV_BUS, bus, &ops);
+	if (err < 0) {
 		snd_i2c_bus_free(bus);
 		return err;
 	}
@@ -246,7 +247,8 @@ static int snd_i2c_bit_sendbyte(struct snd_i2c_bus *bus, unsigned char data)
 
 	for (i = 7; i >= 0; i--)
 		snd_i2c_bit_send(bus, !!(data & (1 << i)));
-	if ((err = snd_i2c_bit_ack(bus)) < 0)
+	err = snd_i2c_bit_ack(bus);
+	if (err < 0)
 		return err;
 	return 0;
 }
@@ -278,12 +280,14 @@ static int snd_i2c_bit_sendbytes(struct snd_i2c_device *device,
 	if (device->flags & SND_I2C_DEVICE_ADDRTEN)
 		return -EIO;		/* not yet implemented */
 	snd_i2c_bit_start(bus);
-	if ((err = snd_i2c_bit_sendbyte(bus, device->addr << 1)) < 0) {
+	err = snd_i2c_bit_sendbyte(bus, device->addr << 1);
+	if (err < 0) {
 		snd_i2c_bit_hw_stop(bus);
 		return err;
 	}
 	while (count-- > 0) {
-		if ((err = snd_i2c_bit_sendbyte(bus, *bytes++)) < 0) {
+		err = snd_i2c_bit_sendbyte(bus, *bytes++);
+		if (err < 0) {
 			snd_i2c_bit_hw_stop(bus);
 			return err;
 		}
@@ -302,12 +306,14 @@ static int snd_i2c_bit_readbytes(struct snd_i2c_device *device,
 	if (device->flags & SND_I2C_DEVICE_ADDRTEN)
 		return -EIO;		/* not yet implemented */
 	snd_i2c_bit_start(bus);
-	if ((err = snd_i2c_bit_sendbyte(bus, (device->addr << 1) | 1)) < 0) {
+	err = snd_i2c_bit_sendbyte(bus, (device->addr << 1) | 1);
+	if (err < 0) {
 		snd_i2c_bit_hw_stop(bus);
 		return err;
 	}
 	while (count-- > 0) {
-		if ((err = snd_i2c_bit_readbyte(bus, count == 0)) < 0) {
+		err = snd_i2c_bit_readbyte(bus, count == 0);
+		if (err < 0) {
 			snd_i2c_bit_hw_stop(bus);
 			return err;
 		}