Revert "hw/audio/hda: fix memory leak on audio setup"

Revert "hw/audio/hda: fix memory leak on audio setup"

This reverts commit 6d03242a7e47815ed56687ecd13f683d8da3f2fe,
which causes SPICE audio to break.  While arguably this is a SPICE bug,
it is possible to fix the leak in a less heavy-handed way.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2639
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20241114125318.1707590-2-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>