drm/amdgpu: remove tlb flush in amdgpu_gtt_mgr_recover

At this point the gart is not set up, there's no point to invalidate tlb
here and it could even be harmful.
Signed-off-by: Yunxiang Li <Yunxiang.Li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c

@@ -200,8 +200,6 @@ void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr)
 		amdgpu_ttm_recover_gart(node->base.bo);
 	}
 	spin_unlock(&mgr->lock);
-
-	amdgpu_gart_invalidate_tlb(adev);
 }
 
 /**