drm/i915: use error path
Use goto to handle the error path to avoid duplicating the same code. In the error path intel_dig_port is the last one to be released as it was the first one to be allocated and ideally the error path should be the reverse of the execution path. Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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