[PATCH v5 2/2] powerpc/powernv: Add NULL check after kzalloc in opal_add_one_export

[Markus Elfring]

> Here needs a NULL check, as kzalloc may fail returning NULL.
>
> Issue was found by coccinelle.

* Do you really try to ignore (my) specific patch review comments
  (for a moment)?
  https://lore.kernel.org/linuxppc-dev/b7d64d4a-74dd-ee21-db7b-018070f1295f@web.de/
  https://lore.kernel.org/patchwork/comment/1414845/
  https://lkml.org/lkml/2020/4/6/279

* Would you like to integrate further adjustments with a varying delay?
  (Are you waiting on nicer feedback by any software maintainers?)

Regards,
Markus