mlx4_core: return a negative error value

The return value should be negative.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mlx4/sense.c b/drivers/net/mlx4/sense.c
index f36ae69..015fbe78 100644
--- a/drivers/net/mlx4/sense.c
+++ b/drivers/net/mlx4/sense.c
@@ -53,7 +53,7 @@
 
 	if (out_param > 2) {
 		mlx4_err(dev, "Sense returned illegal value: 0x%llx\n", out_param);
-		return EINVAL;
+		return -EINVAL;
 	}
 
 	*type = out_param;