drm/i915/guc: Add uc_fini_wq in gem_init unwind path

While moving code around for solving lockdep issue for GuC log relay,
spotted that uc_fini_wq is not being called in failure path in gem_init.
Missed in the below commit. Add it.

v2: Removed GEM_BUG_ON(!HAS_GUC()) from intel_uc_fini_wq as init happens
only based on enable_guc module parameter and does not consider has_guc
capability. (Michal)

Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Fixes: 3176ff4 ("drm/i915/guc: Move GuC workqueue allocations outside of the mutex")
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1515588857-10283-1-git-send-email-sagar.a.kamble@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/i915_gem.c

@@ -5283,6 +5283,8 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
 	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
 
+	intel_uc_fini_wq(dev_priv);
+
 	if (ret != -EIO)
 		i915_gem_cleanup_userptr(dev_priv);
 

drivers/gpu/drm/i915/intel_uc.c

@@ -209,8 +209,6 @@ void intel_uc_fini_wq(struct drm_i915_private *dev_priv)
 	if (!USES_GUC(dev_priv))
 		return;
 
-	GEM_BUG_ON(!HAS_GUC(dev_priv));
-
 	intel_guc_fini_wq(&dev_priv->guc);
 }