[PATCH -next] infiniband: siw: remove set but not used variables 'rv'

[Mao Wenan]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/infiniband/sw/siw/siw_cm.c: In function siw_cep_set_inuse:
drivers/infiniband/sw/siw/siw_cm.c:223:6: warning: variable rv set but not used 
[-Wunused-but-set-variable]

It is not used since commit 6c52fdc244b5("rdma/siw: connection management")

Signed-off-by: Mao Wenan <maowe...@huawei.com>
---
 drivers/infiniband/sw/siw/siw_cm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/infiniband/sw/siw/siw_cm.c 
b/drivers/infiniband/sw/siw/siw_cm.c
index a7cde98..9ce8a1b 100644
--- a/drivers/infiniband/sw/siw/siw_cm.c
+++ b/drivers/infiniband/sw/siw/siw_cm.c
@@ -220,13 +220,12 @@ static void siw_put_work(struct siw_cm_work *work)
 static void siw_cep_set_inuse(struct siw_cep *cep)
 {
        unsigned long flags;
-       int rv;
 retry:
        spin_lock_irqsave(&cep->lock, flags);
 
        if (cep->in_use) {
                spin_unlock_irqrestore(&cep->lock, flags);
-               rv = wait_event_interruptible(cep->waitq, !cep->in_use);
+               wait_event_interruptible(cep->waitq, !cep->in_use);
                if (signal_pending(current))
                        flush_signals(current);
                goto retry;
-- 
2.7.4