Avoid derefenceing the NULL pointer when failing to pin the global
engine context.

Signed-off-by: Zhi Wang <zhi.a.w...@intel.com>
---
 drivers/gpu/drm/i915/i915_gem_context.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c 
b/drivers/gpu/drm/i915/i915_gem_context.c
index 4be2ce9..43d4019 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -316,7 +316,8 @@ err_unpin:
        if (is_global_default_ctx && ctx->legacy_hw_ctx.rcs_state)
                i915_gem_object_ggtt_unpin(ctx->legacy_hw_ctx.rcs_state);
 err_destroy:
-       idr_remove(&file_priv->context_idr, ctx->user_handle);
+       if (file_priv)
+               idr_remove(&file_priv->context_idr, ctx->user_handle);
        i915_gem_context_unreference(ctx);
        return ERR_PTR(ret);
 }
-- 
1.9.1

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