iio: light: lm3533-als: Print error message on invalid resistance

Print an error message to indicate that invalid configuration data was
provided in the platform_data, rather than just aborting initialization.
Signed-off-by: NBjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

drivers/iio/light/lm3533-als.c

@@ -743,8 +743,10 @@ static int lm3533_als_set_resistor(struct lm3533_als *als, u8 val)
 {
 	int ret;
 
-	if (val < LM3533_ALS_RESISTOR_MIN || val > LM3533_ALS_RESISTOR_MAX)
+	if (val < LM3533_ALS_RESISTOR_MIN || val > LM3533_ALS_RESISTOR_MAX) {
+		dev_err(&als->pdev->dev, "invalid resistor value\n");
 		return -EINVAL;
+	};
 
 	ret = lm3533_write(als->lm3533, LM3533_REG_ALS_RESISTOR_SELECT, val);
 	if (ret) {