vxlan: fix error return code in __vxlan_dev_create()
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: 0ce1822c ("vxlan: add adjacent link to limit depth level") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Link: https://lore.kernel.org/r/1606903122-2098-1-git-send-email-zhangchangzhong@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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