nvme-auth: remove redundant buffer deallocations

host_response, host_key, ctrl_key and sess_key are
freed in nvme_auth_reset_dhchap which is called from
nvme_auth_free_dhchap.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/auth.c

@@ -683,10 +683,6 @@ static void nvme_auth_free_dhchap(struct nvme_dhchap_queue_context *chap)
 		crypto_free_shash(chap->shash_tfm);
 	if (chap->dh_tfm)
 		crypto_free_kpp(chap->dh_tfm);
-	kfree_sensitive(chap->ctrl_key);
-	kfree_sensitive(chap->host_key);
-	kfree_sensitive(chap->sess_key);
-	kfree_sensitive(chap->host_response);
 	kfree(chap->buf);
 	kfree(chap);
 }