drm/i915: Don't overwrite the returned error-code

During i915_gem_create_mmap_offset() if the subsystem reports an error
code, use it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-09-21 15:05:24 +01:00
commit 9e0ae53404