[PATCH 14/15] md-cluster: Less function calls in lockres_init() after error detection

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Sat, 1 Oct 2016 16:01:05 +0200

The kfree() function was called in up to three cases
by the lockres_init() function during error handling even if
the passed data structure member (or variable) contained a null pointer.

Adjust jump targets according to the Linux coding style convention.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/md/md-cluster.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index 36bb962..0cade1a 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -201,12 +201,12 @@ static struct dlm_lock_resource *lockres_init(struct 
mddev *mddev,
        namelen = strlen(name);
        res->name = kzalloc(namelen + 1, GFP_KERNEL);
        if (!res->name)
-               goto out_err;
+               goto free_resource;
        strlcpy(res->name, name, namelen + 1);
        if (with_lvb) {
                res->lksb.sb_lvbptr = kzalloc(LVB_SIZE, GFP_KERNEL);
                if (!res->lksb.sb_lvbptr)
-                       goto out_err;
+                       goto free_name;
                res->flags = DLM_LKF_VALBLK;
        }
 
@@ -218,15 +218,17 @@ static struct dlm_lock_resource *lockres_init(struct 
mddev *mddev,
        ret = dlm_lock_sync(res, DLM_LOCK_NL);
        if (ret) {
                pr_err("md-cluster: Unable to lock NL on new lock resource 
%s\n", name);
-               goto out_err;
+               goto free_lvb;
        }
        res->flags &= ~DLM_LKF_EXPEDITE;
        res->flags |= DLM_LKF_CONVERT;
 
        return res;
-out_err:
+free_lvb:
        kfree(res->lksb.sb_lvbptr);
+free_name:
        kfree(res->name);
+free_resource:
        kfree(res);
        return NULL;
 }
-- 
2.10.0