[patch] drm/i915: checking IS_ERR() instead of NULL

[Dan Carpenter]

We switched from calling i915_gem_alloc_context_obj() to calling
i915_gem_alloc_object() so the error handling needs to be updated to
check for NULL instead of IS_ERR().

Fixes: 149c86e74fe4 ('drm/i915: Allocate context objects from stolen')
Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 732fd63..0fa9209 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1895,10 +1895,9 @@ int intel_lr_context_deferred_create(struct 
intel_context *ctx,
        context_size = round_up(get_lr_context_size(ring), 4096);

        ctx_obj = i915_gem_alloc_object(dev, context_size);
-       if (IS_ERR(ctx_obj)) {
-               ret = PTR_ERR(ctx_obj);
-               DRM_DEBUG_DRIVER("Alloc LRC backing obj failed: %d\n", ret);
-               return ret;
+       if (!ctx_obj) {
+               DRM_DEBUG_DRIVER("Alloc LRC backing obj failed.\n");
+               return -ENOMEM;
        }

        if (is_global_default_ctx) {