host/lib/flashrom: Free image data on flashrom_read_* failure

BUG=b:431694612
TEST=make futil -j
BRANCH=none

Change-Id: I5f6e13294a9d1604edc99b14ac999374236060b2
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/6808998
Reviewed-by: Jakub "Kuba" Czapiga <czapiga@google.com>
2 files changed