drm/xe: Fix duplicated put due to merge resolution

drm/xe: Fix duplicated put due to merge resolution

An incorrect backmerge resolution resulted in an
incorrect duplicate put. Fix.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Closes: https://lore.kernel.org/dri-devel/CAHk-=whaiMayMx=LrL7P119MLBX6exM_mEu4S2uBRT+xWQ-mbA@mail.gmail.com/
Fixes: Fixes: ce0478b02ed2 ("Merge tag 'v6.18-rc6' into drm-next")
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>