habanalabs/gaudi: invalidate PMMU mem cache on init

This must be done to clear the internal mem cache so we won't get
ecc errors on the first invalidation.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

drivers/misc/habanalabs/gaudi/gaudi.c

@@ -3906,6 +3906,9 @@ static int gaudi_mmu_init(struct hl_device *hdev)
 	WREG32(mmSTLB_CACHE_INV_BASE_39_8, MMU_CACHE_MNG_ADDR >> 8);
 	WREG32(mmSTLB_CACHE_INV_BASE_49_40, MMU_CACHE_MNG_ADDR >> 40);
 
+	/* mem cache invalidation */
+	WREG32(mmSTLB_MEM_CACHE_INVALIDATION, 1);
+
 	hdev->asic_funcs->mmu_invalidate_cache(hdev, true, 0);
 
 	WREG32(mmMMU_UP_MMU_ENABLE, 1);