iommu/tegra241-cmdqv: Fix CMD_SYNC use-after-free on teardown

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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                        "drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h",
                        "drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
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{
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c",
                        "drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h",
                        "drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
                    ],
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                            "version": "7.3",
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