drm/bridge: imx8qxp-pixel-link: simplify freeing of the remote device_node

drm/bridge: imx8qxp-pixel-link: simplify freeing of the remote device_node

The main loop in imx8qxp_pixel_link_find_next_bridge() requires calling
of_node_put() in multiple places, complicating code flow. Simplify it by
using a cleanup action and making the 'remote' variable scope local to the
loop.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Link: https://patch.msgid.link/20260107-drm-bridge-alloc-getput-drm_of_find_bridge-v4-2-a62b4399a6bf@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>