iio: addac: ad74413r: for_each_set_bit_from -> for_each_set_bit

The starting bit is always zero, it doesn't make much sense to
use for_each_set_bit_from. Replace it with for_each_set_bit
which doesn't start from a particular bit.
Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220111074703.3677392-3-cosmin.tanislav@analog.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/addac/ad74413r.c

@@ -284,10 +284,10 @@ static void ad74413r_gpio_set_multiple(struct gpio_chip *chip,
 	struct ad74413r_state *st = gpiochip_get_data(chip);
 	unsigned long real_mask = 0;
 	unsigned long real_bits = 0;
-	unsigned int offset = 0;
+	unsigned int offset;
 	int ret;
 
-	for_each_set_bit_from(offset, mask, chip->ngpio) {
+	for_each_set_bit(offset, mask, chip->ngpio) {
 		unsigned int real_offset = st->gpo_gpio_offsets[offset];
 
 		ret = ad74413r_set_gpo_config(st, real_offset,
@@ -325,7 +325,7 @@ static int ad74413r_gpio_get_multiple(struct gpio_chip *chip,
 				      unsigned long *bits)
 {
 	struct ad74413r_state *st = gpiochip_get_data(chip);
-	unsigned int offset = 0;
+	unsigned int offset;
 	unsigned int val;
 	int ret;
 
@@ -333,7 +333,7 @@ static int ad74413r_gpio_get_multiple(struct gpio_chip *chip,
 	if (ret)
 		return ret;
 
-	for_each_set_bit_from(offset, mask, chip->ngpio) {
+	for_each_set_bit(offset, mask, chip->ngpio) {
 		unsigned int real_offset = st->comp_gpio_offsets[offset];
 
 		__assign_bit(offset, bits, val & BIT(real_offset));