[dpdk-stable] [dpdk-dev] [PATCH] net/mvpp2: fix memory leak in error path

[wangyunjian]

From: Yunjian Wang <wangyunjian at huawei.com>

In mrvl_create() allocated memory for 'mtr', we don't free it
when profile get fails and it will lead to memory leak.

We can get profile at the beginning of the function to
fix it, before calling mtr = rte_zmalloc_socket().

Fixes: cdb53f8da628 ("net/mvpp2: support metering")
Cc: stable at dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
---
 drivers/net/mvpp2/mrvl_mtr.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/mvpp2/mrvl_mtr.c b/drivers/net/mvpp2/mrvl_mtr.c
index 39272acea4..2fa5cb43ad 100644
--- a/drivers/net/mvpp2/mrvl_mtr.c
+++ b/drivers/net/mvpp2/mrvl_mtr.c
@@ -329,6 +329,12 @@ mrvl_create(struct rte_eth_dev *dev, uint32_t mtr_id,
 	struct mrvl_mtr_profile *profile;
 	struct mrvl_mtr *mtr;
 
+	profile = mrvl_mtr_profile_from_id(priv, params->meter_profile_id);
+	if (!profile)
+		return -rte_mtr_error_set(error, EINVAL,
+					  RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
+					  NULL, "Profile id does not exist\n");
+
 	mtr = mrvl_mtr_from_id(priv, mtr_id);
 	if (mtr)
 		return -rte_mtr_error_set(error, EEXIST,
@@ -341,12 +347,6 @@ mrvl_create(struct rte_eth_dev *dev, uint32_t mtr_id,
 					  RTE_MTR_ERROR_TYPE_UNSPECIFIED,
 					  NULL, NULL);
 
-	profile = mrvl_mtr_profile_from_id(priv, params->meter_profile_id);
-	if (!profile)
-		return -rte_mtr_error_set(error, EINVAL,
-					  RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
-					  NULL, "Profile id does not exist\n");
-
 	mtr->shared = shared;
 	mtr->mtr_id = mtr_id;
 	mtr->plcr_bit = MRVL_PLCR_BIT_INVALID;
-- 
2.23.0