[tip:ras/core] RAS/CEC: Fix potential memory leak

[tip-bot for Borislav Petkov <tipbot@zytor.com>]

Commit-ID:  d0e375e8f26edd2e577e3afa9d952f91037cbd87
Gitweb:     https://git.kernel.org/tip/d0e375e8f26edd2e577e3afa9d952f91037cbd87
Author:     Borislav Petkov <bp@suse.de>
AuthorDate: Sat, 20 Apr 2019 21:39:24 +0200
Committer:  Borislav Petkov <bp@suse.de>
CommitDate: Sat, 8 Jun 2019 17:35:04 +0200

RAS/CEC: Fix potential memory leak

Free the array page if a failure is encountered while creating the
debugfs nodes.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
---
 drivers/ras/cec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c
index 31868bd99e8d..f57e869dfea2 100644
--- a/drivers/ras/cec.c
+++ b/drivers/ras/cec.c
@@ -504,8 +504,10 @@ void __init cec_init(void)
 		return;
 	}
 
-	if (create_debugfs_nodes())
+	if (create_debugfs_nodes()) {
+		free_page((unsigned long)ce_arr.array);
 		return;
+	}
 
 	INIT_DELAYED_WORK(&cec_work, cec_work_fn);
 	schedule_delayed_work(&cec_work, CEC_DECAY_DEFAULT_INTERVAL);