[PATCH 4.4 100/312] xprtrdma: checking for NULL instead of IS_ERR()

[Greg Kroah-Hartman]

From: Dan Carpenter <dan.carpen...@oracle.com>

commit abfb689711aaebd14d893236c6ea4bcdfb61e74c upstream.

The rpcrdma_create_req() function returns error pointers or success.  It
never returns NULL.

Fixes: f531a5dbc451 ('xprtrdma: Pre-allocate backward rpc_rqst and send/receive 
buffers')
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Anna Schumaker <anna.schuma...@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 net/sunrpc/xprtrdma/backchannel.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/sunrpc/xprtrdma/backchannel.c
+++ b/net/sunrpc/xprtrdma/backchannel.c
@@ -42,8 +42,8 @@ static int rpcrdma_bc_setup_rqst(struct
        size_t size;
 
        req = rpcrdma_create_req(r_xprt);
-       if (!req)
-               return -ENOMEM;
+       if (IS_ERR(req))
+               return PTR_ERR(req);
        req->rl_backchannel = true;
 
        size = RPCRDMA_INLINE_WRITE_THRESHOLD(rqst);