wifi: mt76: Use PTR_ERR_OR_ZERO() to simplify code

Return PTR_ERR_OR_ZERO() instead of return 0 or PTR_ERR() to
simplify code.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/init.c

@@ -58,10 +58,7 @@ int mt7615_thermal_init(struct mt7615_dev *dev)
 			      wiphy_name(wiphy));
 	hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, dev,
 						       mt7615_hwmon_groups);
-	if (IS_ERR(hwmon))
-		return PTR_ERR(hwmon);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(hwmon);
 }
 EXPORT_SYMBOL_GPL(mt7615_thermal_init);
 

drivers/net/wireless/mediatek/mt76/mt7915/init.c

@@ -213,10 +213,7 @@ static int mt7915_thermal_init(struct mt7915_phy *phy)
 
 	hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy,
 						       mt7915_hwmon_groups);
-	if (IS_ERR(hwmon))
-		return PTR_ERR(hwmon);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(hwmon);
 }
 
 static void mt7915_led_set_config(struct led_classdev *led_cdev,

drivers/net/wireless/mediatek/mt76/mt7915/soc.c

@@ -1219,10 +1219,7 @@ static int mt798x_wmac_init(struct mt7915_dev *dev)
 		return PTR_ERR(dev->sku);
 
 	dev->rstc = devm_reset_control_get(pdev, "consys");
-	if (IS_ERR(dev->rstc))
-		return PTR_ERR(dev->rstc);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(dev->rstc);
 }
 
 static int mt798x_wmac_probe(struct platform_device *pdev)

drivers/net/wireless/mediatek/mt76/mt7921/init.c

@@ -55,10 +55,7 @@ static int mt7921_thermal_init(struct mt792x_phy *phy)
 
 	hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy,
 						       mt7921_hwmon_groups);
-	if (IS_ERR(hwmon))
-		return PTR_ERR(hwmon);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(hwmon);
 }
 
 static void