util/ectool_keyscan: don't pretend to report passing tests
util/ectool_keyscan: don't pretend to report passing tests

The code looked like it reports both failing and passing tests, except
that the line in question is only executed on failure.

Change-Id: Ie733f517c00a18297c36fae0e18bb9adabba438a
Signed-off-by: Patrick Georgi <bc411205f21846a74924ee7b489c75617ec76078@google.com>
Found-by: Coverity Scan #58156
Reviewed-on: https://chromium-review.googlesource.com/1163609
Commit-Ready: Patrick Georgi <bc411205f21846a74924ee7b489c75617ec76078@chromium.org>
Tested-by: Patrick Georgi <bc411205f21846a74924ee7b489c75617ec76078@chromium.org>
Reviewed-by: Stefan Reinauer <0ab4fef0c228799b0c44e01c732054569b690b58@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec