[PATCH net-next] svcrdma: Fix an uninitialized variable false warning

[YueHaibing]

smatch warning this:
net/sunrpc/xprtrdma/svc_rdma_rw.c:351 svc_rdma_post_chunk_ctxt() error: 
uninitialized symbol 'bad_wr'
net/sunrpc/xprtrdma/verbs.c:1569 rpcrdma_post_recvs() error: uninitialized 
symbol 'bad_wr'

'bad_wr' is initialized in ib_post_send. But smatch
doesn't know that and warns this.

Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 net/sunrpc/xprtrdma/svc_rdma_rw.c | 2 +-
 net/sunrpc/xprtrdma/verbs.c       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c 
b/net/sunrpc/xprtrdma/svc_rdma_rw.c
index dc19517..0954b25 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_rw.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c
@@ -308,7 +308,7 @@ static int svc_rdma_post_chunk_ctxt(struct 
svc_rdma_chunk_ctxt *cc)
        struct svcxprt_rdma *rdma = cc->cc_rdma;
        struct svc_xprt *xprt = &rdma->sc_xprt;
        struct ib_send_wr *first_wr;
-       const struct ib_send_wr *bad_wr;
+       const struct ib_send_wr *bad_wr = NULL;
        struct list_head *tmp;
        struct ib_cqe *cqe;
        int ret;
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 3ddba94..37be70f 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1518,7 +1518,7 @@ void
 rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
 {
        struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
-       struct ib_recv_wr *wr, *bad_wr;
+       struct ib_recv_wr *wr, *bad_wr = NULL;
        int needed, count, rc;
 
        rc = 0;
-- 
2.7.0