net: systemport: Fix an error handling path in bcm_sysport_probe()

stable inclusion
from stable-v5.10.118
commit 201e5b5c27996f38e90a54aac866bccca65f8877
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5L686

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=201e5b5c27996f38e90a54aac866bccca65f8877



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[ Upstream commit ef6b1cd1 ]

if devm_clk_get_optional() fails, we still need to go through the error
handling path.

Add the missing goto.

Fixes: 6328a126 ("net: systemport: Manage Wake-on-LAN clock")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/99d70634a81c229885ae9e4ee69b2035749f7edc.1652634040.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>