drm/i915: Prevent potential null-ptr-deref in engine_init_common

From Nirmoy Das
f1cdb599ce0ef909343d6c8e7d372defbaa382b9 in mainline linux

diff --git a/sys/dev/pci/drm/i915/gt/intel_engine_cs.c b/sys/dev/pci/drm/i915/gt/intel_engine_cs.c
index eacfe84..6b9c9c0 100644 (file)
--- a/sys/dev/pci/drm/i915/gt/intel_engine_cs.c
+++ b/sys/dev/pci/drm/i915/gt/intel_engine_cs.c
@@ -1523,7 +1523,8 @@ static int engine_init_common(struct intel_engine_cs *engine)
        return 0;
 
 err_bce_context:
-       intel_engine_destroy_pinned_context(bce);
+       if (bce)
+               intel_engine_destroy_pinned_context(bce);
 err_ce_context:
        intel_engine_destroy_pinned_context(ce);
        return ret;