drm/client: Do not free client memory by default

drm/client: Do not free client memory by default

Make no assumption on the allocation of the client's memory. For
example, amdgpu stores a client within another data structures,
where it cannot be freed by itself.

The correct place to free the client's memory is the client's free
callback. All existing clients implement this.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20251009132006.45834-5-tzimmermann@suse.de