virt: sev-guest: Pass the appropriate argument type to iounmap()

Fix a sparse warning in sev_guest_probe() where the wrong argument type is
provided to iounmap().

Fixes: 4822b984cb56 ("virt: Add SEV-SNP guest driver")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/202207150617.jqwQ0Rpz-lkp@intel.com

diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c
index 90ce16b6e05f91e9f29173d9def568ab4075f863..f422f9c58ba790c94957f4c38da4f8599fbc1e44 100644 (file)
--- a/drivers/virt/coco/sev-guest/sev-guest.c
+++ b/drivers/virt/coco/sev-guest/sev-guest.c
@@ -632,16 +632,19 @@ static int __init sev_guest_probe(struct platform_device *pdev)
        struct device *dev = &pdev->dev;
        struct snp_guest_dev *snp_dev;
        struct miscdevice *misc;
+       void __iomem *mapping;
        int ret;
 
        if (!dev->platform_data)
                return -ENODEV;
 
        data = (struct sev_guest_platform_data *)dev->platform_data;
-       layout = (__force void *)ioremap_encrypted(data->secrets_gpa, PAGE_SIZE);
-       if (!layout)
+       mapping = ioremap_encrypted(data->secrets_gpa, PAGE_SIZE);
+       if (!mapping)
                return -ENODEV;
 
+       layout = (__force void *)mapping;
+
        ret = -ENOMEM;
        snp_dev = devm_kzalloc(&pdev->dev, sizeof(struct snp_guest_dev), GFP_KERNEL);
        if (!snp_dev)
@@ -706,7 +709,7 @@ e_free_response:
 e_free_request:
        free_shared_pages(snp_dev->request, sizeof(struct snp_guest_msg));
 e_unmap:
-       iounmap(layout);
+       iounmap(mapping);
        return ret;
 }