[PATCH 10/29] ibmvfc: allocate and free NVMe channel group discover buffer

[Tyrel Datwyler <tyreld@linux.ibm.com>]

Allocate a discovery buffer for the NVMe channel group and free it on
all teardown and error paths.

The existing discovery-buffer allocation only covered the SCSI channel
group. This patch is prepratory for sending NVMe/FC target discovery
MAD.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
 drivers/scsi/ibmvscsi/ibmvfc-core.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ibmvscsi/ibmvfc-core.c b/drivers/scsi/ibmvscsi/ibmvfc-core.c
index 9cd688762150..efac82c48258 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc-core.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc-core.c
@@ -6365,6 +6365,7 @@ static void ibmvfc_free_mem(struct ibmvfc_host *vhost)
 	mempool_destroy(vhost->tgt_pool);
 	kfree(vhost->trace);
 	ibmvfc_free_disc_buf(vhost->dev, &vhost->scsi_scrqs);
+	ibmvfc_free_disc_buf(vhost->dev, &vhost->nvme_scrqs);
 	dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf),
 			  vhost->login_buf, vhost->login_buf_dma);
 	dma_free_coherent(vhost->dev, sizeof(*vhost->channel_setup_buf),
@@ -6427,12 +6428,15 @@ static int ibmvfc_alloc_mem(struct ibmvfc_host *vhost)
 	if (ibmvfc_alloc_disc_buf(dev, &vhost->scsi_scrqs))
 		goto free_login_buffer;
 
+	if (ibmvfc_alloc_disc_buf(dev, &vhost->nvme_scrqs))
+		goto free_scsi_disc_buffer;
+
 	vhost->trace = kzalloc_objs(struct ibmvfc_trace_entry,
 				    IBMVFC_NUM_TRACE_ENTRIES);
 	atomic_set(&vhost->trace_index, -1);
 
 	if (!vhost->trace)
-		goto free_scsi_disc_buffer;
+		goto free_nvme_disc_buffer;
 
 	vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ,
 						      sizeof(struct ibmvfc_target));
@@ -6458,6 +6462,8 @@ static int ibmvfc_alloc_mem(struct ibmvfc_host *vhost)
 	mempool_destroy(vhost->tgt_pool);
 free_trace:
 	kfree(vhost->trace);
+free_nvme_disc_buffer:
+	ibmvfc_free_disc_buf(dev, &vhost->nvme_scrqs);
 free_scsi_disc_buffer:
 	ibmvfc_free_disc_buf(dev, &vhost->scsi_scrqs);
 free_login_buffer:
-- 
2.54.0