regulator: pv88060: fix error handling in probe

There were some missing "ret = " assignments here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/pv88060-regulator.c

@@ -351,14 +351,14 @@ static int pv88060_i2c_probe(struct i2c_client *i2c,
 			return ret;
 		}
 
-		regmap_write(chip->regmap, PV88060_REG_MASK_B, 0xFF);
+		ret = regmap_write(chip->regmap, PV88060_REG_MASK_B, 0xFF);
 		if (ret < 0) {
 			dev_err(chip->dev,
 				"Failed to mask B reg: %d\n", ret);
 			return ret;
 		}
 
-		regmap_write(chip->regmap, PV88060_REG_MASK_C, 0xFF);
+		ret = regmap_write(chip->regmap, PV88060_REG_MASK_C, 0xFF);
 		if (ret < 0) {
 			dev_err(chip->dev,
 				"Failed to mask C reg: %d\n", ret);