nvmet-fc: fix failing max io queue connections

fc transport is treating NVMET_NR_QUEUES as maximum queue count, e.g.
admin queue plus NVMET_NR_QUEUES-1 io queues.  But NVMET_NR_QUEUES is
the number of io queues, so maximum queue count is really
NVMET_NR_QUEUES+1.

Fix the handling in the target fc transport
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

drivers/nvme/target/fc.c

@@ -148,7 +148,7 @@ struct nvmet_fc_tgt_assoc {
 	u32				a_id;
 	struct nvmet_fc_tgtport		*tgtport;
 	struct list_head		a_list;
-	struct nvmet_fc_tgt_queue	*queues[NVMET_NR_QUEUES];
+	struct nvmet_fc_tgt_queue	*queues[NVMET_NR_QUEUES + 1];
 	struct kref			ref;
 };
 
@@ -608,7 +608,7 @@ nvmet_fc_alloc_target_queue(struct nvmet_fc_tgt_assoc *assoc,
 	unsigned long flags;
 	int ret;
 
-	if (qid >= NVMET_NR_QUEUES)
+	if (qid > NVMET_NR_QUEUES)
 		return NULL;
 
 	queue = kzalloc((sizeof(*queue) +
@@ -888,7 +888,7 @@ nvmet_fc_delete_target_assoc(struct nvmet_fc_tgt_assoc *assoc)
 	int i;
 
 	spin_lock_irqsave(&tgtport->lock, flags);
-	for (i = NVMET_NR_QUEUES - 1; i >= 0; i--) {
+	for (i = NVMET_NR_QUEUES; i >= 0; i--) {
 		queue = assoc->queues[i];
 		if (queue) {
 			if (!nvmet_fc_tgt_q_get(queue))