power: supply: fix null pointer check order in __power_supply_register

There is an null pointer check order issue here: if we have to
check !desc and !desc->name anyway, check it before dereferencing it in
pr_warn().

Signed-off-by: qinyu <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>

Author: qinyu

drivers/power/supply/power_supply_core.c

@@ -1207,13 +1207,13 @@ __power_supply_register(struct device *parent,
 	struct power_supply *psy;
 	int rc;
 
+	if (!desc || !desc->name || !desc->properties || !desc->num_properties)
+		return ERR_PTR(-EINVAL);
+
 	if (!parent)
 		pr_warn("%s: Expected proper parent device for '%s'\n",
 			__func__, desc->name);
 
-	if (!desc || !desc->name || !desc->properties || !desc->num_properties)
-		return ERR_PTR(-EINVAL);
-
 	if (psy_has_property(desc, POWER_SUPPLY_PROP_USB_TYPE) &&
 	    (!desc->usb_types || !desc->num_usb_types))
 		return ERR_PTR(-EINVAL);