drivers: dac: ad5710r: Fix register address selection

Select correct register address for the specified channel in
ad5710r_set_operating_mode() function

Signed-off-by: Anush Shetty <[email protected]>

Author: Shetty-Anush

drivers/dac/ad5710r/ad5710r.c

@@ -595,8 +595,7 @@ int ad5710r_set_operating_mode(struct ad5710r_desc *desc, uint8_t chn_num,
 		return -EINVAL;
 
 	ret = ad5710r_spi_write_mask(desc,
-				     chn_num < AD5710R_MAX_CHANNEL_OP_MODE_0  ? AD5710R_REG_ADDR_OPERATING_MODE_0 :
-				     AD5710R_REG_ADDR_OPERATING_MODE_1,
+				     AD5710R_REG_ADDR_OPERATING_MODE_CHN(chn_num),
 				     AD5710R_MASK_OPERATING_MODE(chn_num),
 				     chn_op_mode);
 	if (ret)