[PATCHv2 net-next 02/11] net: dsa: mv88e6xxx: Fix unused variable warning by using variable

[Andrew Lunn]

 _mv88e6xxx_stats_wait() did not check the return value from
 mv88e6xxx_g1_read(), so the compiler complained about set but unused
 err.

Signed-off-by: Andrew Lunn <and...@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 062b9128a58d..c0152125680f 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -787,6 +787,9 @@ static int _mv88e6xxx_stats_wait(struct mv88e6xxx_chip 
*chip)
 
        for (i = 0; i < 10; i++) {
                err = mv88e6xxx_g1_read(chip, GLOBAL_STATS_OP, &val);
+               if (err)
+                       return err;
+
                if ((val & GLOBAL_STATS_OP_BUSY) == 0)
                        return 0;
        }
-- 
2.10.2