coverity 12606 Logically dead code
    
    The previous fix (commit 325abca7135d06225adf5380d726de60dacda5a4)
    for "Ticket #303 - make DNA range requests work with transactions"
    introduced this dead code.  Since dna_pre_op does not allocate
    an entry "e", there is no need to check the flag "free_entry" and
    free it.
    
    Reviewed by mareynol@redhat.com (Thanks, Mark!!).