At present mtrr_commit() programs the MTRR MSRs starting from index 0, which may overwrite MSRs that were already programmed by previous boot stage or FSP. Switch to call mtrr_set_next_var() instead. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested on chromebook_coral, chromebook_samus, chromebook_link, minnowmax Tested-by: Simon Glass <sjg@chromium.org>