Fix error handling of variable index loading

If loading of the variable index from Protected Storage fails, SmmGW
will silently continue with empty variable store. This is a serious
fault and a potential security risk.
Change the code to produce a log output when this happens and stop
loading the SP.

Signed-off-by: Gabor Toth <gabor.toth2@arm.com>
Change-Id: I9db0d50fe75975d8165fe2fc27821644d85d09f0
1 file changed