[PATCH v2] NTB: perf: Fix an error code in perf_setup_inbuf()

[Yang Li]

When the function IS_ALIGNED() returns false, the value of ret is 0.
So, we set ret to -EINVAL to indicate this error.

Clean up smatch warning:
drivers/ntb/test/ntb_perf.c:602 perf_setup_inbuf() warn: missing error
code 'ret'.

Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Signed-off-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx>
Reviewed-by: Serge Semin <fancer.lancer@xxxxxxxxx>
---

Change in v2:
--According to Serge's suggestion, set ret to -EINVAL.
https://lore.kernel.org/lkml/20210605180554.ql4rhpukj57ujkxw@mobilestation/

 drivers/ntb/test/ntb_perf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index 89df135..65e1e5c 100644
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -598,6 +598,7 @@ static int perf_setup_inbuf(struct perf_peer *peer)
 		return -ENOMEM;
 	}
 	if (!IS_ALIGNED(peer->inbuf_xlat, xlat_align)) {
+		ret = -EINVAL;
 		dev_err(&perf->ntb->dev, "Unaligned inbuf allocated\n");
 		goto err_free_inbuf;
 	}
-- 
1.8.3.1