drm/xe: Remove unrequired NULL checks in xe_sync_entry_cleanup

dma_fence_put() and dma_fence_chain_free() can handle NULL input,
there is no need for NULL check by caller.
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240820090230.3258128-2-himal.prasad.ghimiray@intel.comSigned-off-by: Nirmoy Das <nirmoy.das@intel.com>

drivers/gpu/drm/xe/xe_sync.c

@@ -249,10 +249,8 @@ void xe_sync_entry_cleanup(struct xe_sync_entry *sync)
 {
 	if (sync->syncobj)
 		drm_syncobj_put(sync->syncobj);
-	if (sync->fence)
-		dma_fence_put(sync->fence);
-	if (sync->chain_fence)
-		dma_fence_chain_free(sync->chain_fence);
+	dma_fence_put(sync->fence);
+	dma_fence_chain_free(sync->chain_fence);
 	if (sync->ufence)
 		user_fence_put(sync->ufence);
 }