radeonsi: fix a memory leak in si_create_dcc_retile_cs

Fixes: 1f21396431a - radeonsi: add support for displayable DCC for multi-RB chips

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7721>
(cherry picked from commit e64d5cc4d6c0b950883be0882f9b7ad3401965c1)
2 files changed