power: supply: sbs-charger: use dev_err_probe

Introduce usage of dev_err_probe in probe routine, which
makes the code slightly more readable and removes some
lines of code. It also removes PROBE_DEFER errors being
logged by default.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/sbs-charger.c

@@ -189,18 +189,14 @@ static int sbs_probe(struct i2c_client *client,
 	 * to the battery.
 	 */
 	ret = regmap_read(chip->regmap, SBS_CHARGER_REG_STATUS, &val);
-	if (ret) {
-		dev_err(&client->dev, "Failed to get device status\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&client->dev, ret, "Failed to get device status\n");
 	chip->last_state = val;
 
-	chip->power_supply = devm_power_supply_register(&client->dev, &sbs_desc,
-							&psy_cfg);
-	if (IS_ERR(chip->power_supply)) {
-		dev_err(&client->dev, "Failed to register power supply\n");
-		return PTR_ERR(chip->power_supply);
-	}
+	chip->power_supply = devm_power_supply_register(&client->dev, &sbs_desc, &psy_cfg);
+	if (IS_ERR(chip->power_supply))
+		return dev_err_probe(&client->dev, PTR_ERR(chip->power_supply),
+				     "Failed to register power supply\n");
 
 	/*
 	 * The sbs-charger spec doesn't impose the use of an interrupt. So in
@@ -212,10 +208,8 @@ static int sbs_probe(struct i2c_client *client,
 					NULL, sbs_irq_thread,
 					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
 					dev_name(&client->dev), chip);
-		if (ret) {
-			dev_err(&client->dev, "Failed to request irq, %d\n", ret);
-			return ret;
-		}
+		if (ret)
+			return dev_err_probe(&client->dev, ret, "Failed to request irq\n");
 	} else {
 		INIT_DELAYED_WORK(&chip->work, sbs_delayed_work);
 		schedule_delayed_work(&chip->work,