[PATCH 5.7 303/477] mailbox: imx: Fix return in imx_mu_scu_xlate()

[Greg Kroah-Hartman]

From: Dan Carpenter <dan.carpen...@oracle.com>

[ Upstream commit 1b3a347b7d56aa637157da1b7df225071af1421f ]

This called from mbox_request_channel().  The caller is  expecting error
pointers and not NULL so this "return NULL;" will lead to an Oops.

Fixes: 0a67003b1985 ("mailbox: imx: add SCU MU support")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Jassi Brar <jaswinder.si...@linaro.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/mailbox/imx-mailbox.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 7906624a731c1..9d6f0217077b2 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -374,7 +374,7 @@ static struct mbox_chan *imx_mu_scu_xlate(struct 
mbox_controller *mbox,
                break;
        default:
                dev_err(mbox->dev, "Invalid chan type: %d\n", type);
-               return NULL;
+               return ERR_PTR(-EINVAL);
        }
 
        if (chan >= mbox->num_chans) {
-- 
2.25.1