max17042_battery: Fix missing verify_model_lock() return value check

The second error check is unreachable because the lock function isn't
assigned to ret.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index 74abc6c..66b2c7b 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -572,7 +572,8 @@
 			__func__);
 		return -EIO;
 	}
-	max17042_verify_model_lock(chip);
+
+	ret = max17042_verify_model_lock(chip);
 	if (ret) {
 		dev_err(&chip->client->dev, "%s lock verify failed\n",
 			__func__);