scsi: target/core: Use kmem_cache_free() instead of kfree()

memory allocated by kmem_cache_alloc() should be freed using
kmem_cache_free(), not kfree().

Fixes: ad669505 ("scsi: target/core: Make sure that target_wait_for_sess_cmds() waits long enough")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/target/target_core_transport.c

@@ -266,7 +266,7 @@ struct se_session *transport_alloc_session(enum target_prot_op sup_prot_ops)
 	}
 	ret = transport_init_session(se_sess);
 	if (ret < 0) {
-		kfree(se_sess);
+		kmem_cache_free(se_sess_cache, se_sess);
 		return ERR_PTR(ret);
 	}
 	se_sess->sup_prot_ops = sup_prot_ops;