net: chelsio: cxgb3: check the return value of pci_find_capability()

stable inclusion
from stable-v5.10.104
commit e6bc597fbcb20039ec84b3fdc762e368192889d6
bugzilla: https://gitee.com/openeuler/kernel/issues/I56XAC

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e6bc597fbcb20039ec84b3fdc762e368192889d6

--------------------------------

[ Upstream commit 767b9825 ]

The function pci_find_capability() in t3_prep_adapter() can fail, so its
return value should be checked.

Fixes: 4d22de3e ("Add support for the latest 1G/10G Chelsio adapter, T3")
Reported-by: NTOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: NJia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NYu Liao <liaoyu15@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/chelsio/cxgb3/t3_hw.c

@@ -3678,6 +3678,8 @@ int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai,
 	    MAC_STATS_ACCUM_SECS : (MAC_STATS_ACCUM_SECS * 10);
 	adapter->params.pci.vpd_cap_addr =
 	    pci_find_capability(adapter->pdev, PCI_CAP_ID_VPD);
+	if (!adapter->params.pci.vpd_cap_addr)
+		return -ENODEV;
 	ret = get_vpd_params(adapter, &adapter->params.vpd);
 	if (ret < 0)
 		return ret;