[PATCH] vDPA/ifcvf: Fix pci_read_config_byte() return code handling

[Yuan Can]

ifcvf_init_hw() uses pci_read_config_byte() that returns
PCIBIOS_* codes. The error handling, however, assumes the codes are
normal errnos because it checks for < 0.
Convert the error check to plain non-zero check.

Fixes: 5a2414bc454e ("virtio: Intel IFC VF driver for VDPA")
Signed-off-by: Yuan Can <yuan...@huawei.com>
---
 drivers/vdpa/ifcvf/ifcvf_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index 472daa588a9d..d5507b63b6cd 100644
--- a/drivers/vdpa/ifcvf/ifcvf_base.c
+++ b/drivers/vdpa/ifcvf/ifcvf_base.c
@@ -108,7 +108,7 @@ int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *pdev)
        u32 i;
 
        ret = pci_read_config_byte(pdev, PCI_CAPABILITY_LIST, &pos);
-       if (ret < 0) {
+       if (ret) {
                IFCVF_ERR(pdev, "Failed to read PCI capability list\n");
                return -EIO;
        }
-- 
2.17.1