[PATCH v2] char: tpm: fix error return code in tpm_cr50_i2c_tis_recv()

[Zhihao Cheng]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 3a253caaad11 ("char: tpm: add i2c driver for cr50")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Zhihao Cheng <chengzhih...@huawei.com>
---
 drivers/char/tpm/tpm_tis_i2c_cr50.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/tpm/tpm_tis_i2c_cr50.c 
b/drivers/char/tpm/tpm_tis_i2c_cr50.c
index ec9a65e7887d..f19c227d20f4 100644
--- a/drivers/char/tpm/tpm_tis_i2c_cr50.c
+++ b/drivers/char/tpm/tpm_tis_i2c_cr50.c
@@ -483,6 +483,7 @@ static int tpm_cr50_i2c_tis_recv(struct tpm_chip *chip, u8 
*buf, size_t buf_len)
        expected = be32_to_cpup((__be32 *)(buf + 2));
        if (expected > buf_len) {
                dev_err(&chip->dev, "Buffer too small to receive i2c data\n");
+               rc = -E2BIG;
                goto out_err;
        }
 
-- 
2.25.4