ipmi: remve duplicate code in __ipmi_bmc_register()

__ipmi_bmc_register() jumps to the label 'out_free_my_dev_name' in an
error path. So we can remove duplicate code in the if (rv).

Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Message-Id: <20200720080838.148737-1-jingxiangfeng@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_msghandler.c

@@ -3080,8 +3080,6 @@ static int __ipmi_bmc_register(struct ipmi_smi *intf,
 	rv = sysfs_create_link(&bmc->pdev.dev.kobj, &intf->si_dev->kobj,
 			       intf->my_dev_name);
 	if (rv) {
-		kfree(intf->my_dev_name);
-		intf->my_dev_name = NULL;
 		dev_err(intf->si_dev, "Unable to create symlink to bmc: %d\n",
 			rv);
 		goto out_free_my_dev_name;