hwmon/ams: Fix I2C read retry logic

static int ams_i2c_cmd(enum ams_i2c_cmd cmd)

{

	s32 result;

	int remaining = HZ / 20;

	int count = 3;

	ams_i2c_write(AMS_COMMAND, cmd);

	mdelay(5);

	msleep(5);

	while (remaining) {

	while (count--) {

		result = ams_i2c_read(AMS_COMMAND);

		if (result == 0 || result & 0x80)

			return 0;

		remaining = schedule_timeout(remaining);

		schedule_timeout_uninterruptible(HZ / 20);

	}

	return -1;