[PATCH 354/379][SRU][OEM-5.6] ath11k: Fix memory leak on error path

[You-Sheng Yang]

From: Alex Dewar <alex.dewar90 at gmail.com>

BugLink: https://bugs.launchpad.net/bugs/1879633

In ath11k_mac_setup_iface_combinations(), if memory cannot be assigned
for the variable limits, then the memory assigned to combinations will
be leaked. Fix this.

Addresses-Coverity-ID: 1497534 ("Resource leaks")
Fixes: 2626c269702e ("ath11k: add interface_modes to hw_params")
Signed-off-by: Alex Dewar <alex.dewar90 at gmail.com>
Signed-off-by: Kalle Valo <kvalo at codeaurora.org>
Link: https://lore.kernel.org/r/20201004100218.311653-2-alex.dewar90@gmail.com
(cherry picked from commit 8431350eee2e27ae60f5250e0437ab298329070e)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 drivers/net/wireless/ath/ath11k/mac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 3f63a7bd6b59..7f8dd47d2333 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -6041,8 +6041,10 @@ static int ath11k_mac_setup_iface_combinations(struct ath11k *ar)
 	n_limits = 2;
 
 	limits = kcalloc(n_limits, sizeof(*limits), GFP_KERNEL);
-	if (!limits)
+	if (!limits) {
+		kfree(combinations);
 		return -ENOMEM;
+	}
 
 	limits[0].max = 1;
 	limits[0].types |= BIT(NL80211_IFTYPE_STATION);
-- 
2.29.2