drm/radeon: fix missing bo reservation
drm/radeon: fix missing bo reservation

Signed-off-by: Christian König <c7ea837d7a46effe4232b086213468b8b31643bf@amd.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs