power: supply: bq27xxx: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Sebastian Reichel <[e-mail]>

drivers/power/supply/bq27xxx_battery.c

···
 	psy_desc->external_power_changed = bq27xxx_external_power_changed;
 
 	di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
-	if (IS_ERR(di->bat)) {
-		if (PTR_ERR(di->bat) == -EPROBE_DEFER)
-			dev_dbg(di->dev, "failed to register battery, deferring probe\n");
-		else
-			dev_err(di->dev, "failed to register battery\n");
-		return PTR_ERR(di->bat);
-	}
+	if (IS_ERR(di->bat))
+		return dev_err_probe(di->dev, PTR_ERR(di->bat),
+				     "failed to register battery\n");
 
 	bq27xxx_battery_settings(di);
 	bq27xxx_battery_update(di);