Doing these MINs at the end could have undone optimizations for the LDS size and threadgroup size, so move the MINs up. Reviewed-by: Zoltán Böszörményi <zboszor@gmail.com> Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9028>