northbridge/amd/amdmct/mct: Initialize variables at the eol

Spotted by Clang

Change-Id: Idada98b7863ef986021943cf3ddb92d2f035e3e1
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5816
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2 files changed