scsi: fnic: Fix error return code in fnic_probe()

scsi: fnic: Fix error return code in fnic_probe()

BugLink: https://bugs.launchpad.net/bugs/1910822
[ Upstream commit d4fc94fe65578738ded138e9fce043db6bfc3241 ]

Return a negative error code from the error handling case instead of 0 as
done elsewhere in this function.

Link: https://lore.kernel.org/r/1607068060-31203-1-git-send-email-zhangchangzhong@huawei.com
Fixes: 5df6d737dd4b ("[SCSI] fnic: Add new Cisco PCI-Express FCoE HBA")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>