ceph: cleanup use of ceph_msg_get

Signed-off-by: Jianpeng Ma <[e-mail]>
Signed-off-by: Yan, Zheng <[e-mail]>

fs/ceph/mds_client.c

···
 		if (err) {
 			req->r_err = err;
 		} else {
-			req->r_reply = msg;
-			ceph_msg_get(msg);
+			req->r_reply =  ceph_msg_get(msg);
 			req->r_got_result = true;
 		}
 	} else {