Description: kvm: fix kvm_ioctl_create_device() reference counting
 https://bugzilla.redhat.com/show_bug.cgi?id=1671913
 https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9
References:
Notes:
 carnil> Commit fixes 852b6d57dc7f ("kvm: add device control API") (3.10-rc1)
Bugs:
upstream: released (5.0-rc6) [cfa39381173d5f969daf43582c95ad679189cbc9]
4.19-upstream-stable: released (4.19.21) [24b027d2b1386da03aafb2aaac69d4fa67ee7d9c]
4.9-upstream-stable: released (4.9.156) [0c42df1f9f82f73ebc6c0f54b1df295ffc5a7b4b]
3.16-upstream-stable: released (3.16.64) [2aa9f75791601aab7bd02b8783aa9a8f5105f68f]
sid: released (4.19.20-1) [bugfix/all/kvm-fix-kvm_ioctl_create_device-reference-counting-C.patch]
4.9-stretch-security: released (4.9.161-1)
3.16-jessie-security: released (3.16.64-1)