Minidiag: Commit NVRAM immediately right after cleaning diag request

Clean up the diag request flag to avoid potential reboot loop if somehow
a forced reboot occurs.

BRANCH=puff,zork,volteer,trogdor,dedede
BUG=b:177303714
TEST=CQ
TEST=FEATURES=test P2_TEST_FILTER='*' emerge-zork vboot_reference
TEST=boot to minidiag and then do hardware reset, then expect boot to
OS instead of boot to minidiag again.

Signed-off-by: Meng-Huan Yu <menghuan@chromium.org>
Change-Id: I24815d512ca42b78dc42cafaebc666e6a53db793
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2624110
Reviewed-by: Joel Kitching <kitching@chromium.org>
1 file changed