Revert "drm/i915/gt: Propagate change in error status to children on unhold"

Revert "drm/i915/gt: Propagate change in error status to children on unhold"

Propagating errors to dependent fences is broken and can lead to errors
from one client ending up in another. In commit 376e99dded54 ("Revert
"drm/i915: Propagate errors on awaiting already signaled fences""), we
attempted to get rid of fence error propagation but missed the case
added in commit 416a80f8ff9d ("drm/i915/gt: Propagate change in error
status to children on unhold"). Revert that one too. This error was
found by an up-and-coming selftest which triggers a reset during
request cancellation and verifies that subsequent requests complete
successfully.

v2:
 (Daniel Vetter)
  - Use revert
v3:
 (Jason)
  - Update commit message

v4 (Daniele):
 - fix checkpatch error in commit message.

References: '376e99dded54 ("Revert "drm/i915: Propagate errors on awaiting already signaled fences"")'
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210909164744.31249-8-matthew.brost@intel.com