reset: rzg2l-usbphy-ctrl: Assign proper of node to the allocated device

The platform device named "rzg2l-usb-vbus-regulator", allocated by
the rzg2l-usbphy-ctrl driver, is used to instantiate a regulator driver.
This regulator driver is associated with a device tree (DT) node, which
is a child of the rzg2l-usbphy-ctrl DT node. The regulator's DT node allows
consumer nodes to reference the regulator and configure the regulator as
needed.

Starting with commit cd7a38c40b23 ("regulator: core: do not silently ignore
provided init_data") the struct regulator_dev::dev::of_node is no longer
populated using of_node_get(config->of_node) if the regulator does not
provide init_data. Since the rzg2l-usb-vbus-regulator does not provide
init_data, this behaviour causes the of_find_regulator_by_node() function
to fails, resulting in errors when attempting to request the regulator.

To fix this issue, call device_set_of_node_from_dev() for the
"rzg2l-usb-vbus-regulator" platform device.

Fixes: 84fbd6198766 ("regulator: Add Renesas RZ/G2L USB VBUS regulator driver")
Signed-off-by: Claudiu Beznea <[e-mail]>
Reviewed-by: Biju Das <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Philipp Zabel <[e-mail]>

drivers/reset/reset-rzg2l-usbphy-ctrl.c

···
 	vdev->dev.parent = dev;
 	priv->vdev = vdev;
 
+	device_set_of_node_from_dev(&vdev->dev, dev);
 	error = platform_device_add(vdev);
 	if (error)
 		goto err_device_put;