power: supply: ds2760: Use devm_power_supply_register() helper

Use the device lifecycle managed register function. This helps prevent
mistakes like unregistering out of order in cleanup functions and
forgetting to unregister on error paths.

Signed-off-by: Andrew Davis <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Sebastian Reichel <[e-mail]>

drivers/power/supply/ds2760_battery.c

···
 	if (current_accum)
 		ds2760_battery_set_current_accum(di, current_accum);
 
-	di->bat = power_supply_register(dev, &di->bat_desc, &psy_cfg);
+	di->bat = devm_power_supply_register(dev, &di->bat_desc, &psy_cfg);
 	if (IS_ERR(di->bat)) {
 		dev_err(di->dev, "failed to register battery\n");
 		retval = PTR_ERR(di->bat);
···
 	goto success;
 
 workqueue_failed:
-	power_supply_unregister(di->bat);
 batt_failed:
 di_alloc_failed:
 success:
···
 	cancel_delayed_work_sync(&di->monitor_work);
 	cancel_delayed_work_sync(&di->set_charged_work);
 	destroy_workqueue(di->monitor_wqueue);
-	power_supply_unregister(di->bat);
 }
 
 #ifdef CONFIG_OF