drm/i915: don't leak struct_mutex lock on ppgtt init failures

Reported-by: Konstantin Belousov <kostikbel@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 8a62285ddbd0..785f67f963ef 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1222,8 +1222,10 @@ static int i915_load_gem_init(struct drm_device *dev)
                 i915_gem_do_init(dev, 0, mappable_size, gtt_size);
 
                 ret = i915_gem_init_aliasing_ppgtt(dev);
-                if (ret)
+                if (ret) {
+                        mutex_unlock(&dev->struct_mutex);
                         return ret;
+                }
         } else {
                 /* Let GEM Manage all of the aperture.
                  *