When rrpc_write_ppalist_rq and rrpc_read_ppalist_rq succeed, we setup rq correctly, but nvm_submit_io failed due to cannot allocate request or nvme_nvm_command, we return error but forget to do the cleanup job this patch mentioned.
Thanks. I've included that explanation instead for the commit message. I've applied it for 4.5 (together with your previous patch).
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