drm/i915: Drop fb reference on load_detect_pipe failure path
When intel_modeset_setup_plane_state() fails drop the local framebuffer reference before jumping to the error, otherwise we leak the framebuffer. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Fixes: edde3617 ("drm/i915: Use atomic state to obtain load detection crtc, v3.") Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171207220025.22698-1-chris@chris-wilson.co.uk
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