drm/i915: Remove pointless goto fail

We just 'return ret' immediately after jumping to the label. Let's
return directly instead.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181107213522.17590-2-ville.syrjala@linux.intel.com


Reviewed-by: Imre Deak <imre.deak@intel.com>