PCI: cadence: Add cdns_plat_pcie_probe() missing return

stable inclusion
from stable-5.10.80
commit c1a8fb237470f1579fe4504389f4b3cf2e4015e8
bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c1a8fb237470f1579fe4504389f4b3cf2e4015e8

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

commit 27cd7e3c upstream.

When cdns_plat_pcie_probe() succeeds, return success instead of falling
into the error handling code.

Fixes: bd22885a ("PCI: cadence: Refactor driver to use as a core library")
Link: https://lore.kernel.org/r/DM6PR19MB40271B93057D949310F0B0EDA0BF9@DM6PR19MB4027.namprd19.prod.outlook.comSigned-off-by: NXuliang Zhang <xlzhanga@ambarella.com>
Signed-off-by: NLi Chen <lchen@ambarella.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NBjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/pci/controller/cadence/pcie-cadence-plat.c

@@ -127,6 +127,8 @@ static int cdns_plat_pcie_probe(struct platform_device *pdev)
 			goto err_init;
 	}
 
+	return 0;
+
  err_init:
  err_get_sync:
 	pm_runtime_put_sync(dev);