drm/i915: Clear ret before unbinding in i915_gem_evict_something()

Missed when rebasing patches, I failed to set ret to zero before
starting the unbind loop (which depends upon ret being zero).

Reported-by: Matthew Auld <matthew.william.auld@gmail.com>
Fixes: 9332f3b1b99a ("drm/i915: Combine loops within i915_gem_evict_something")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170105155940.10033-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Cc: <stable@vger.kernel.org> # v4.9+
(cherry picked from commit 121dfbb2a2ef1c5f49e15c38ccc47ff0beb59446)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index bd08814b015c..d534a316a16e 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -199,6 +199,7 @@ found:
         }
 
         /* Unbinding will emit any required flushes */
+        ret = 0;
         while (!list_empty(&eviction_list)) {
                 vma = list_first_entry(&eviction_list,
                                        struct i915_vma,