Merge "drm/msm: Consider case of no smmu_client in SMMU"

/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

	msm_mmu_init(&smmu->base, drm_dev, dev, name[domain], &funcs);

	client = msm_smmu_to_client(smmu);

	if (client) {

		iommu_set_fault_handler(client->mmu_mapping->domain,

				msm_smmu_fault_handler, dev);

		drm_mm_init(&smmu->va_mm, client->domain->va_start,

				client->domain->va_size);

	}

	dpriv->mmus[domain] = &smmu->base;