hw/misc/xlnx-versal-cfu: destroy fifo in finalize

hw/misc/xlnx-versal-cfu: destroy fifo in finalize

Since the TYPE_XNLX_VERSAL_CFU_FDRO device creates a FIFO in its
instance_init method, we must destroy the FIFO in instance_finalize
to avoid a memory leak for the QOM introspection
"instantiate-examine-finalize" cycle:

Direct leak of 8192 byte(s) in 1 object(s) allocated from:
    #0 0x55ec89eae7ee in malloc (/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/asan/qemu-system-aarch64+0x294d7ee) (BuildId: 6d508874816cc47d17c8dd775e8f809ae520e8cb)
    #1 0x7f697018f738 in g_malloc debian/build/deb/../../../glib/gmem.c:128:13
    #2 0x55ec8d98d98d in fifo8_create util/fifo8.c:27:18
    #3 0x55ec8aa2a624 in fifo32_create /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/qemu/fifo32.h:35:5
    #4 0x55ec8aa2a33c in cfu_fdro_init hw/misc/xlnx-versal-cfu.c:397:5
    #5 0x55ec8ce75da1 in object_init_with_type qom/object.c:420:9
    #6 0x55ec8ce5d07b in object_initialize_with_type qom/object.c:562:5
    #7 0x55ec8ce5e91d in object_new_with_type qom/object.c:782:5
    #8 0x55ec8ce5e9f1 in object_new qom/object.c:797:12
    #9 0x55ec8d65c81d in qmp_device_list_properties qom/qom-qmp-cmds.c:144:11

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20240822162127.705879-2-peter.maydell@linaro.org