9p/rdma: remove useless check in cm_event_handler

[ Upstream commit 473c7dd ]

the client c is always dereferenced to get the rdma struct, so c has to
be a valid pointer at this point.
Gcc would optimize that away but let's make coverity happy...

Link: http://lkml.kernel.org/r/[email protected]
Addresses-Coverity-ID: 102778 ("Dereference before null check")
Signed-off-by: Dominique Martinet <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: Dominique Martinet

net/9p/trans_rdma.c

@@ -254,8 +254,7 @@ p9_cm_event_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
 	case RDMA_CM_EVENT_DISCONNECTED:
 		if (rdma)
 			rdma->state = P9_RDMA_CLOSED;
-		if (c)
-			c->status = Disconnected;
+		c->status = Disconnected;
 		break;
 
 	case RDMA_CM_EVENT_TIMEWAIT_EXIT: