gpiolib: acpi: Simplify error handling in __acpi_find_gpio()

Now that we don't perform anything on the GPIO descriptor,
we may simplify the error path in newly introduced helper.
Do it so.
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/gpio/gpiolib-acpi.c

@@ -974,20 +974,14 @@ __acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id, unsigned int
 			return ERR_CAST(desc);
 
 		if (!IS_ERR(desc))
-			break;
+			return desc;
 	}
 
 	/* Then from plain _CRS GPIOs */
-	if (IS_ERR(desc)) {
 	if (!adev || !acpi_can_fallback_to_crs(adev, con_id))
 		return ERR_PTR(-ENOENT);
 
-		desc = acpi_get_gpiod_by_index(adev, NULL, idx, info);
-		if (IS_ERR(desc))
-			return desc;
-	}
-
-	return desc;
+	return acpi_get_gpiod_by_index(adev, NULL, idx, info);
 }
 
 struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode,