[Intel-gfx] [PATCH 1/3] drm/i915/guc: Fix return from guc_log_relay_file_create

[Chris Wilson]

Quoting Sagar Arun Kamble (2018-01-31 06:14:37)
> guc_log_relay_file_create will return -EEXIST if we invoke
> relay_late_setup_files multiple times as part of i915_guc_log_control.
> However this is to be not cosidered as fail and need to return 0.
> This was mistakenly introduced in the below commit. Fix it.
> 
> Fixes: 70deeaddc6e6 "drm/i915/guc: Fix lockdep due to log relay channel handling under struct_mutex"
> Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>

Testcase?
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris