smb: client: remove pointless sc->send_io.pending handling in smbd_post_send_iter()

If we reach this the connection is already broken as
smbd_post_send() already called
smbd_disconnect_rdma_connection().

This will also simplify further changes.

Cc: <stable@vger.kernel.org> # 6.18.x
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>

Author: metze-samba

fs/smb/client/smbdirect.c

@@ -1274,11 +1274,6 @@ static int smbd_post_send_iter(struct smbdirect_socket *sc,
 	if (!rc)
 		return 0;
 
-	if (atomic_dec_and_test(&sc->send_io.pending.count))
-		wake_up(&sc->send_io.pending.zero_wait_queue);
-
-	wake_up(&sc->send_io.pending.dec_wait_queue);
-
 err_dma:
 	for (i = 0; i < request->num_sge; i++)
 		if (request->sge[i].addr)