[Intel-gfx] [PATCH v2 12/12] drm/i915: Handle return value in intel_pin_and_fence_fb_obj, v2.

[shuang.he at intel.com]

Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6874
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
ILK                                  297/297              297/297
SNB                                  315/315              315/315
IVB                                  342/342              342/342
BYT                                  284/284              284/284
HSW                                  378/378              378/378
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
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