x86, AMD IOMMU: initialize dma_ops after sysfs registration

If sysfs registration fails all memory used by IOMMU is freed. This
happens after dma_ops initialization and the functions will access the
freed memory then.

Fix this by initializing dma_ops after the sysfs registration.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index ceba338..a69cc0f 100644 (file)
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -972,15 +972,15 @@ int __init amd_iommu_init(void)
        if (acpi_table_parse("IVRS", init_memory_definitions) != 0)
                goto free;
 
-       ret = amd_iommu_init_dma_ops();
+       ret = sysdev_class_register(&amd_iommu_sysdev_class);
        if (ret)
                goto free;
 
-       ret = sysdev_class_register(&amd_iommu_sysdev_class);
+       ret = sysdev_register(&device_amd_iommu);
        if (ret)
                goto free;
 
-       ret = sysdev_register(&device_amd_iommu);
+       ret = amd_iommu_init_dma_ops();
        if (ret)
                goto free;