net/smc: avoid a delay by waiting for nothing

When a send failed then don't start to wait for a response in
smc_llc_do_confirm_rkey.

Signed-off-by: Karsten Graul <[e-mail]>
Signed-off-by: Ursula Braun <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/smc/smc_llc.c

···
 	int rc;
 
 	reinit_completion(&link->llc_confirm_rkey);
-	smc_llc_send_confirm_rkey(link, rmb_desc);
+	rc = smc_llc_send_confirm_rkey(link, rmb_desc);
+	if (rc)
+		return rc;
 	/* receive CONFIRM RKEY response from server over RoCE fabric */
 	rc = wait_for_completion_interruptible_timeout(&link->llc_confirm_rkey,
 						       SMC_LLC_WAIT_TIME);