Change in coreboot[master]: amd/stoneyridge/dimm_spd.c: Fix dereference before NULL check

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Change subject: amd/stoneyridge/dimm_spd.c: Fix dereference before NULL check
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Patch Set 1: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/18687/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/63816/ : SUCCESS