nfp: Fix passing zero to 'PTR_ERR'

nfp_cpp_from_nfp6000_pcie() returns ERR_PTR() and never returns
NULL. The NULL test should be removed, also return correct err.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Link: https://lore.kernel.org/r/20201112145852.6580-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.c b/drivers/net/ethernet/netronome/nfp/nfp_main.c
index 7ff2ccb..e672614 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_main.c
@@ -724,10 +724,8 @@ static int nfp_pci_probe(struct pci_dev *pdev,
        }
 
        pf->cpp = nfp_cpp_from_nfp6000_pcie(pdev);
-       if (IS_ERR_OR_NULL(pf->cpp)) {
+       if (IS_ERR(pf->cpp)) {
                err = PTR_ERR(pf->cpp);
-               if (err >= 0)
-                       err = -ENOMEM;
                goto err_disable_msix;
        }