hdaps: Handle errors from input_register_device

HDAPS: handle errors from input_register_device()
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/hwmon/hdaps.c

@@ -587,7 +587,9 @@ static int __init hdaps_init(void)
 	input_set_abs_params(hdaps_idev, ABS_Y,
 			-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
 
-	input_register_device(hdaps_idev);
+	ret = input_register_device(hdaps_idev);
+	if (ret)
+		goto out_idev;
 
 	/* start up our timer for the input device */
 	init_timer(&hdaps_timer);
@@ -598,6 +600,8 @@ static int __init hdaps_init(void)
 	printk(KERN_INFO "hdaps: driver successfully loaded.\n");
 	return 0;
 
+out_idev:
+	input_free_device(hdaps_idev);
 out_group:
 	sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
 out_device: