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iommu/amd: Fix possible use after free in get_irq_table()

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We should return NULL on error instead of the freed pointer.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Dan Carpenter 2012-10-02 11:34:40 +03:00 committed by Joerg Roedel
parent bdddadcb07
commit 821f0f68ca
1 changed files with 1 additions and 0 deletions
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drivers/iommu/amd_iommu.c
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@ -3865,6 +3865,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic)
table->table = kmem_cache_alloc(amd_iommu_irq_cache, GFP_ATOMIC);
if (!table->table) {
kfree(table);
table = NULL;
goto out;
}