Revert "iommu: sun50i: clear bypass register"

This reverts commit 75758ca.

Author: scpcom

drivers/iommu/sun50i-iommu.c

@@ -523,7 +523,6 @@ static int sun50i_iommu_enable(struct sun50i_iommu *iommu, struct sunxi_iommu_ow
 		    IOMMU_TLB_PREFETCH_MASTER_ENABLE(3) |
 		    IOMMU_TLB_PREFETCH_MASTER_ENABLE(4) |
 		    IOMMU_TLB_PREFETCH_MASTER_ENABLE(5));
-	iommu_write(iommu, IOMMU_BYPASS_REG, 0);
 	iommu_write(iommu, IOMMU_INT_ENABLE_REG, IOMMU_INT_MASK);
 	iommu_write(iommu, IOMMU_DM_AUT_CTRL_REG(SUN50I_IOMMU_ACI_NONE),
 		    IOMMU_DM_AUT_CTRL_RD_UNAVAIL(SUN50I_IOMMU_ACI_NONE, 0) |