[PATCH net-next] octeontx2-af: Fix error code in rvu_mbox_init()

[Dan Carpenter <dan.carpenter@linaro.org>]

The error code was intended to be -EINVAL here, but it was accidentally
changed to returning success.  Set the error code.

Fixes: e53ee4acb220 ("octeontx2-af: CN20k basic mbox operations and structures")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 7e538ee8a59f..c6bb3aaa8e0d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -2458,9 +2458,9 @@ static int rvu_mbox_init(struct rvu *rvu, struct mbox_wq_info *mw,
 			 void (mbox_handler)(struct work_struct *),
 			 void (mbox_up_handler)(struct work_struct *))
 {
-	int err = -EINVAL, i, dir, dir_up;
 	void __iomem **mbox_regions;
 	struct ng_rvu *ng_rvu_mbox;
+	int err, i, dir, dir_up;
 	void __iomem *reg_base;
 	struct rvu_work *mwork;
 	unsigned long *pf_bmap;
@@ -2526,6 +2526,7 @@ static int rvu_mbox_init(struct rvu *rvu, struct mbox_wq_info *mw,
 			goto free_regions;
 		break;
 	default:
+		err = -EINVAL;
 		goto free_regions;
 	}
 
-- 
2.47.2