drm/amdgpu: free the pre-OS console framebuffer after the first modeset

Rather than in late_init to avoid race conditions between freeing the
buffers and the initial modeset.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2026,10 +2026,6 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
  */
 void amdgpu_ttm_late_init(struct amdgpu_device *adev)
 {
-	/* return the VGA stolen memory (if any) back to VRAM */
-	if (!adev->mman.keep_stolen_vga_memory)
-		amdgpu_bo_free_kernel(&adev->mman.stolen_vga_memory, NULL, NULL);
-	amdgpu_bo_free_kernel(&adev->mman.stolen_extended_memory, NULL, NULL);
 }
 
 /*
@@ -2042,8 +2038,8 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev)
 
 	amdgpu_ttm_training_reserve_vram_fini(adev);
 	/* return the stolen vga memory back to VRAM */
-	if (adev->mman.keep_stolen_vga_memory)
-		amdgpu_bo_free_kernel(&adev->mman.stolen_vga_memory, NULL, NULL);
+	amdgpu_bo_free_kernel(&adev->mman.stolen_vga_memory, NULL, NULL);
+	amdgpu_bo_free_kernel(&adev->mman.stolen_extended_memory, NULL, NULL);
 	/* return the IP Discovery TMR memory back to VRAM */
 	amdgpu_bo_free_kernel(&adev->mman.discovery_memory, NULL, NULL);
 	amdgpu_ttm_fw_reserve_vram_fini(adev);

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -8462,6 +8462,11 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
 
 	drm_atomic_helper_cleanup_planes(dev, state);
 
+	/* return the stolen vga memory back to VRAM */
+	if (!adev->mman.keep_stolen_vga_memory)
+		amdgpu_bo_free_kernel(&adev->mman.stolen_vga_memory, NULL, NULL);
+	amdgpu_bo_free_kernel(&adev->mman.stolen_extended_memory, NULL, NULL);
+
 	/*
 	 * Finally, drop a runtime PM reference for each newly disabled CRTC,
 	 * so we can put the GPU into runtime suspend if we're not driving any