s390/ap: fix memory leak in ap_init_qci_info()

If kzalloc() for 'ap_qci_info_old' failed, 'ap_qci_info' shold be
freed before return. Otherwise it is a memory leak.

Link: https://lore.kernel.org/r/20221114110830.542246-1-weiyongjun@huaweicloud.com
Fixes: 2839158 ("s390/ap: notify drivers on config changed and scan complete callbacks")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

Author: Wei Yongjun

drivers/s390/crypto/ap_bus.c

@@ -233,8 +233,11 @@ static void __init ap_init_qci_info(void)
 	if (!ap_qci_info)
 		return;
 	ap_qci_info_old = kzalloc(sizeof(*ap_qci_info_old), GFP_KERNEL);
-	if (!ap_qci_info_old)
+	if (!ap_qci_info_old) {
+		kfree(ap_qci_info);
+		ap_qci_info = NULL;
 		return;
+	}
 	if (ap_fetch_qci_info(ap_qci_info) != 0) {
 		kfree(ap_qci_info);
 		kfree(ap_qci_info_old);