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-rw-r--r--arch/x86/kernel/amd_iommu.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index d6898833c36..9f89bb645b3 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1541,8 +1541,10 @@ static void *alloc_coherent(struct device *dev, size_t size,
*dma_addr = __map_single(dev, iommu, domain->priv, paddr,
size, DMA_BIDIRECTIONAL, true, dma_mask);
- if (*dma_addr == bad_dma_address)
+ if (*dma_addr == bad_dma_address) {
+ spin_unlock_irqrestore(&domain->lock, flags);
goto out_free;
+ }
iommu_completion_wait(iommu);