wimax: i2400: Fix memory leak in i2400m_op_rfkill_sw_toggle

[ Upstream commit 6f3ef5c25cc762687a7341c18cbea5af54461407 ]

In the implementation of i2400m_op_rfkill_sw_toggle() the allocated
buffer for cmd should be released before returning. The
documentation for i2400m_msg_to_dev() says when it returns the buffer
can be reused. Meaning cmd should be released in either case. Move
kfree(cmd) before return to be reached by all execution paths.

Fixes: 2507e6ab7a9a ("wimax: i2400: fix memory leak")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wimax/i2400m/op-rfkill.c b/drivers/net/wimax/i2400m/op-rfkill.c
index 7c92e8a..dc6fe93 100644 (file)
--- a/drivers/net/wimax/i2400m/op-rfkill.c
+++ b/drivers/net/wimax/i2400m/op-rfkill.c
@@ -142,12 +142,12 @@ int i2400m_op_rfkill_sw_toggle(struct wimax_dev *wimax_dev,
                        "%d\n", result);
        result = 0;
 error_cmd:
-       kfree(cmd);
        kfree_skb(ack_skb);
 error_msg_to_dev:
 error_alloc:
        d_fnend(4, dev, "(wimax_dev %p state %d) = %d\n",
                wimax_dev, state, result);
+       kfree(cmd);
        return result;
 }