phy: cadence: Sierra: Fix error return code in cdns_sierra_phy_probe()

stable inclusion
from stable-v5.10.44
commit d83075c25a28e6e8f02e531c8dd4b4e0b58c3ef5
bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=461
CVE: NA

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

commit 6411e386 upstream.

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: a43f72ae ("phy: cadence: Sierra: Change MAX_LANES of Sierra to 16")
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NWang Wensheng <wangwensheng4@huawei.com>
Link: https://lore.kernel.org/r/20210517015749.127799-1-wangwensheng4@huawei.comSigned-off-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Nlcr <lichaoran21@mails.ucas.ac.cn>
Reviewed-by: NJian Cheng <cj.chengjian@huawei.com>
Signed-off-by: NWang ShaoBo <bobo.shaobowang@huawei.com>

drivers/phy/cadence/phy-cadence-sierra.c

@@ -614,6 +614,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 	sp->nsubnodes = node;
 
 	if (sp->num_lanes > SIERRA_MAX_LANES) {
+		ret = -EINVAL;
 		dev_err(dev, "Invalid lane configuration\n");
 		goto put_child2;
 	}