[lvc-project] [PATCH 5.10 0/1] i40e: Add checking for null for nlmsg_find_attr()

[Natalia Petrova]

The remark about the error code by Simon Horman <simon.horman at corigine.com> was taken into account.
Return value -ENOENT was changed to -EINVAL.

Found by Linux Verification Center (linuxtesting.org) with SVACE.