[PATCH 4.9 47/66] drm/i915: Clear ret before unbinding in i915_gem_evict_something()

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

commit e88893fea17996018b2d68a22e677ea04f3baadf upstream.

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@xxxxxxxxx>
Fixes: 9332f3b1b99a ("drm/i915: Combine loops within i915_gem_evict_something")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20170105155940.10033-1-chris@xxxxxxxxxxxxxxxxxx
Reviewed-by: Matthew Auld <matthew.william.auld@xxxxxxxxx>
(cherry picked from commit 121dfbb2a2ef1c5f49e15c38ccc47ff0beb59446)
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/i915/i915_gem_evict.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -194,6 +194,7 @@ found:
 	}
 
 	/* Unbinding will emit any required flushes */
+	ret = 0;
 	while (!list_empty(&eviction_list)) {
 		vma = list_first_entry(&eviction_list,
 				       struct i915_vma,