soc/amd/common/block/s3/s3_resume.c: Check mrc_cache_get_current() return

Procedure mrc_cache_get_current() returns -1 for error, 0 for pass. Do
check the return in procedure get_s3nv_info.

This fixes CID 1385943
BUG=b:73333332
TEST=Build kahlee

Change-Id: I0f6a58380a38d13120e997dcd966423d3c2af091
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/23761
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions