octeontx2-af: Fix reference count issue in rvu_sdp_init()

pci_get_device() will decrease the reference count for the *from*
parameter. So we don't need to call put_device() to decrease the
reference. Let's remove the put_device() in the loop and only decrease
the reference count of the returned 'pdev' for the last loop because it
will not be passed to pci_get_device() as input parameter. We don't need
to check if 'pdev' is NULL because it is already checked inside
pci_dev_put(). Also add pci_dev_put() for the error path.

Fixes: fe1939bb2340 ("octeontx2-af: Add SDP interface support")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: Saeed Mahameed <saeed@kernel.org>
Link: https://lore.kernel.org/r/20221123065919.31499-1-wangxiongfeng2@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c
index b04fb22..ae50d56 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c
@@ -62,15 +62,18 @@ int rvu_sdp_init(struct rvu *rvu)
                pfvf->sdp_info = devm_kzalloc(rvu->dev,
                                              sizeof(struct sdp_node_info),
                                              GFP_KERNEL);
-               if (!pfvf->sdp_info)
+               if (!pfvf->sdp_info) {
+                       pci_dev_put(pdev);
                        return -ENOMEM;
+               }
 
                dev_info(rvu->dev, "SDP PF number:%d\n", sdp_pf_num[i]);
 
-               put_device(&pdev->dev);
                i++;
        }
 
+       pci_dev_put(pdev);
+
        return 0;
 }