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optee: fix kfree NULL pointer

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This patch fixes the following Coccinelle error:
drivers/tee/optee/ffa_abi.c: 877: ERROR  optee is NULL but dereferenced.

If memory allocation fails, optee is null pointer. the code will goto err
and release optee.

Fixes: 4615e5a34b ("optee: add FF-A support")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
[jw: removed the redundant braces]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This commit is contained in:
Lv Ruyi 2021-11-04 11:30:47 +00:00 committed by Jens Wiklander
parent fa55b7dcdc
commit c23ca66a4d
1 changed files with 3 additions and 4 deletions
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7
drivers/tee/optee/ffa_abi.c
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@ -810,10 +810,9 @@ static int optee_ffa_probe(struct ffa_device *ffa_dev)
return -EINVAL;
optee = kzalloc(sizeof(*optee), GFP_KERNEL);
if (!optee) {
rc = -ENOMEM;
goto err;
}
if (!optee)
return -ENOMEM;
optee->pool = optee_ffa_config_dyn_shm();
if (IS_ERR(optee->pool)) {
rc = PTR_ERR(optee->pool);