mfd: ab3100-otp: Convert to managed resources for allocating memory

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/ab3100-otp.c

@@ -187,7 +187,7 @@ static int __init ab3100_otp_probe(struct platform_device *pdev)
 	int err = 0;
 	int i;
 
-	otp = kzalloc(sizeof(struct ab3100_otp), GFP_KERNEL);
+	otp = devm_kzalloc(&pdev->dev, sizeof(struct ab3100_otp), GFP_KERNEL);
 	if (!otp) {
 		dev_err(&pdev->dev, "could not allocate AB3100 OTP device\n");
 		return -ENOMEM;
@@ -199,7 +199,7 @@ static int __init ab3100_otp_probe(struct platform_device *pdev)
 
 	err = ab3100_otp_read(otp);
 	if (err)
-		goto err_otp_read;
+		return err;
 
 	dev_info(&pdev->dev, "AB3100 OTP readout registered\n");
 
@@ -208,22 +208,19 @@ static int __init ab3100_otp_probe(struct platform_device *pdev)
 		err = device_create_file(&pdev->dev,
 					 &ab3100_otp_attrs[i]);
 		if (err)
-			goto err_create_file;
+			goto err;
 	}
 
 	/* debugfs entries */
 	err = ab3100_otp_init_debugfs(&pdev->dev, otp);
 	if (err)
-		goto err_init_debugfs;
+		goto err;
 
 	return 0;
 
-err_init_debugfs:
-err_create_file:
+err:
 	while (--i >= 0)
 		device_remove_file(&pdev->dev, &ab3100_otp_attrs[i]);
-err_otp_read:
-	kfree(otp);
 	return err;
 }
 
@@ -236,7 +233,6 @@ static int __exit ab3100_otp_remove(struct platform_device *pdev)
 		device_remove_file(&pdev->dev,
 				   &ab3100_otp_attrs[i]);
 	ab3100_otp_exit_debugfs(otp);
-	kfree(otp);
 	return 0;
 }