cdx: Fix device node reference leak in cdx_msi_domain_init

Add missing of_node_put() call to release
the device node reference obtained via of_parse_phandle().

Fixes: 0e439ba3 ("cdx: add MSI support for CDX bus")
Cc: stable@vger.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Nipun Gupta <nipun.gupta@amd.com>
Link: https://lore.kernel.org/r/20250902084933.2418264-1-linmq006@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>