media: ar0521: fix error return code in ar0521_power_on()

Return error code if ar0521_write_regs() fails in ar0521_power_on().

Fixes: 852b50ae ("media: On Semi AR0521 sensor driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/i2c/ar0521.c

@@ -757,8 +757,9 @@ static int ar0521_power_on(struct device *dev)
 	usleep_range(4500, 5000); /* min 45000 clocks */
 
 	for (cnt = 0; cnt < ARRAY_SIZE(initial_regs); cnt++)
-		if (ar0521_write_regs(sensor, initial_regs[cnt].data,
-				      initial_regs[cnt].count))
+		ret = ar0521_write_regs(sensor, initial_regs[cnt].data,
+					initial_regs[cnt].count);
+		if (ret)
 			goto off;
 
 	ret = ar0521_write_reg(sensor, AR0521_REG_SERIAL_FORMAT,