radv: Return a block from radv_replay_shader_arena_block
radv: Return a block from radv_replay_shader_arena_block
ret_block is only set to NULL.
Fixes: 28be0cc ("radv: Add locking to radv_replay_shader_arena_block")
It wasn't caught by CI because dEQP-VK.ray_tracing_pipeline.pipeline_library.configurations.misc.maintenance5
is part of the navi21 flake list.
/cc @hakzsam