RAS/CEC: Fix cec_init() prototype

late_initcall() expects a function that returns an integer. Update the
function signature to match.

 [ bp: Massage commit message into proper sentences. ]

Fixes: 9554bfe4 ("x86/mce: Convert the CEC to use the MCE notifier")
Signed-off-by: Luca Stefani <luca.stefani.ge1@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20200805095708.83939-1-luca.stefani.ge1@gmail.com

drivers/ras/cec.c

@@ -553,20 +553,20 @@ static struct notifier_block cec_nb = {
 	.priority	= MCE_PRIO_CEC,
 };
 
-static void __init cec_init(void)
+static int __init cec_init(void)
 {
 	if (ce_arr.disabled)
-		return;
+		return -ENODEV;
 
 	ce_arr.array = (void *)get_zeroed_page(GFP_KERNEL);
 	if (!ce_arr.array) {
 		pr_err("Error allocating CE array page!\n");
-		return;
+		return -ENOMEM;
 	}
 
 	if (create_debugfs_nodes()) {
 		free_page((unsigned long)ce_arr.array);
-		return;
+		return -ENOMEM;
 	}
 
 	INIT_DELAYED_WORK(&cec_work, cec_work_fn);
@@ -575,6 +575,7 @@ static void __init cec_init(void)
 	mce_register_decode_chain(&cec_nb);
 
 	pr_info("Correctable Errors collector initialized.\n");
+	return 0;
 }
 late_initcall(cec_init);