No callers checks the return value and this makes further
changes easier.
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
  * and we have to locally invalidate the buffer to prevent data is being
  * modified by remote peer after upper layer consumes it
  */
-int smbd_deregister_mr(struct smbdirect_mr_io *smbdirect_mr)
+void smbd_deregister_mr(struct smbdirect_mr_io *smbdirect_mr)
 {
        struct ib_send_wr *wr;
        struct smbdirect_socket *sc = smbdirect_mr->socket;
 done:
        if (atomic_dec_and_test(&sc->mr_io.used.count))
                wake_up(&sc->mr_io.cleanup.wait_queue);
-
-       return rc;
 }
 
 static bool smb_set_sge(struct smb_extract_to_rdma *rdma,
 
 struct smbdirect_mr_io *smbd_register_mr(
        struct smbd_connection *info, struct iov_iter *iter,
        bool writing, bool need_invalidate);
-int smbd_deregister_mr(struct smbdirect_mr_io *mr);
+void smbd_deregister_mr(struct smbdirect_mr_io *mr);
 
 #else
 #define cifs_rdma_enabled(server)      0