bnx2x: fix potential memory leak in bnx2x_tpa_stop()

stable inclusion
from stable-v5.10.153
commit 6cc0e2afc6a137d45b9523f61a1b1b16a68c9dc0
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I5W7B1
CVE: CVE-2022-3542

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.153&id=6cc0e2afc6a137d45b9523f61a1b1b16a68c9dc0

--------------------------------

[ Upstream commit b43f9acb ]

bnx2x_tpa_stop() allocates a memory chunk from new_data with
bnx2x_frag_alloc(). The new_data should be freed when gets some error.
But when "pad + len > fp->rx_buf_size" is true, bnx2x_tpa_stop() returns
without releasing the new_data, which will lead to a memory leak.

We should free the new_data with bnx2x_frag_free() when "pad + len >
fp->rx_buf_size" is true.

Fixes: 07b0f009 ("bnx2x: fix possible panic under memory stress")
Signed-off-by: NJianglei Nie <niejianglei2021@163.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NRen Zhijie <renzhijie2@huawei.com>
Reviewed-by: NZhang Qiao <zhangqiao22@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c

@@ -788,6 +788,7 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 			BNX2X_ERR("skb_put is about to fail...  pad %d  len %d  rx_buf_size %d\n",
 				  pad, len, fp->rx_buf_size);
 			bnx2x_panic();
+			bnx2x_frag_free(fp, new_data);
 			return;
 		}
 #endif