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)
diff --git a/src/gallium/drivers/radeonsi/si_shaderlib_tgsi.c b/src/gallium/drivers/radeonsi/si_shaderlib_tgsi.c
index c1a150d..e27a94a 100644
--- a/src/gallium/drivers/radeonsi/si_shaderlib_tgsi.c
+++ b/src/gallium/drivers/radeonsi/si_shaderlib_tgsi.c
@@ -278,6 +278,7 @@
 
    void *cs = ctx->create_compute_state(ctx, &state);
    ureg_destroy(ureg);
+   ureg_free_tokens(state.prog);
    return cs;
 }