Description: Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2137979
 https://lore.kernel.org/all/20221007013708.1946061-1-zyytlz.wz@163.com/
Notes:
Bugs:
upstream: released (6.2-rc3) [4a61648af68f5ba4884f0e3b494ee1cabc4b6620]
6.1-upstream-stable: released (6.1.5) [1022519da69d99d455c58ca181a6c499c562c70e]
5.10-upstream-stable: released (5.10.170) [3d743415c6fb092167df6c23e9c7e9f6df7db625]
4.19-upstream-stable: released (4.19.274) [c5245a6cf83ca5c4b68d643f8b31ed0eb127126e]
sid: released (6.1.7-1)
5.10-bullseye-security: released (5.10.178-1)
4.19-buster-security: released (4.19.282-1)