RAS/CEC: Check the correct variable in the debugfs error handling

Check the correct variable when handling a potential error from
debugfs_create_file(). Most likely a copy-paste botch.

[ Rewrite commit message. ]
Fixes: 011d826 ("RAS: Add a Corrected Errors Collector")
Signed-off-by: Christophe JAILLET <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]

drivers/ras/cec.c

@@ -481,7 +481,7 @@ static int __init create_debugfs_nodes(void)
 
 	count = debugfs_create_file("count_threshold", S_IRUSR | S_IWUSR, d,
 				    &count_threshold, &count_threshold_ops);
-	if (!decay) {
+	if (!count) {
 		pr_warn("Error creating count_threshold debugfs node!\n");
 		goto err;
 	}