intel: Clear execobject flags before preserving object in reuse cache

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index 9195f3e..077746c 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -1411,6 +1411,8 @@
 		bo_gem->name = NULL;
 		bo_gem->validate_index = -1;
 
+		bo_gem->kflags = 0;
+
 		DRMLISTADDTAIL(&bo_gem->head, &bucket->head);
 	} else {
 		drm_intel_gem_bo_free(bo);