rbd: fix memory leak when fails to get the address

Signed-off-by: Xiubo Li <[email protected]>

rbd.c

@@ -1210,10 +1210,12 @@ static int tcmu_rbd_open(struct tcmu_device *dev, bool reopen)
 #ifdef LIBRADOS_SUPPORTS_GETADDRS
 	/* Get current entry address for the image */
 	ret = rados_getaddrs(state->cluster, &state->addrs);
-	tcmu_dev_info(dev, "address: {%s}\n", state->addrs);
+	if (ret < 0) {
+		tcmu_dev_err(dev, "failed getting the address\n");
+		goto stop_image;
+	}
+	tcmu_dev_info(dev, "opened, the address: {%s}\n", state->addrs);
 	pthread_mutex_unlock(&rdev->priv_lock);
-	if (ret < 0)
-		return ret;
 #endif
 
 	free(dev_cfg_dup);