iommu: remove unneeded semicolon

cocci warnings:
	drivers/iommu/dma-iommu.c:1788:2-3: Unneeded semicolon

so remove unneeded semicolon to fix cocci warnings.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/tencent_73EEE47E6ECCF538229C9B9E6A0272DA2B05@qq.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: Pei Xiao

drivers/iommu/dma-iommu.c

@@ -1754,7 +1754,7 @@ static size_t cookie_msi_granule(const struct iommu_domain *domain)
 		return PAGE_SIZE;
 	default:
 		BUG();
-	};
+	}
 }
 
 static struct list_head *cookie_msi_pages(const struct iommu_domain *domain)
@@ -1766,7 +1766,7 @@ static struct list_head *cookie_msi_pages(const struct iommu_domain *domain)
 		return &domain->msi_cookie->msi_page_list;
 	default:
 		BUG();
-	};
+	}
 }
 
 static struct iommu_dma_msi_page *iommu_dma_get_msi_page(struct device *dev,