ppc440: Avoid reporting error when reading non-existent RAM slot

When reading base register of RAM slot with no RAM we should not try
to calculate register value because that will result printing an error
due to invalid RAM size. Just return 0 without the error in this case.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
1 file changed