regulator: da9210: Remove redundant error message

kzalloc prints its own OOM message upon failure.

Signed-off-by: Sachin Kamat <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/da9210-regulator.c

···
 	int error;
 
 	chip = devm_kzalloc(&i2c->dev, sizeof(struct da9210), GFP_KERNEL);
-	if (NULL == chip) {
-		dev_err(&i2c->dev,
-			"Cannot kzalloc memory for regulator structure\n");
+	if (!chip)
 		return -ENOMEM;
-	}
 
 	chip->regmap = devm_regmap_init_i2c(i2c, &da9210_regmap_config);
 	if (IS_ERR(chip->regmap)) {