In procedure exception_init(), structure pointer gates is initialized twice. Remove one initialization. BUG=b:112253891 TEST=Build and boot grunt. Change-Id: If0280963e8b796f795e77a11569277dcf16b4507 Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com> Reviewed-on: https://review.coreboot.org/27948 Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>