[PATCH] net: mana: store return status in signed variable

[Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>]

The mana_adev_idx_alloc() can return negative value. Save its return
value in ret which is signed variable and check if it is correct value.

Fixes: ee928282bfa7 ("net: mana: Add support for auxiliary device")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
---
 drivers/net/ethernet/microsoft/mana/mana_en.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index 7ca313c7b7b3..1c59502d34b5 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -2203,11 +2203,10 @@ static int add_adev(struct gdma_dev *gd)
 		return -ENOMEM;
 
 	adev = &madev->adev;
-	adev->id = mana_adev_idx_alloc();
-	if (adev->id < 0) {
-		ret = adev->id;
+	ret = mana_adev_idx_alloc();
+	if (ret < 0)
 		goto idx_fail;
-	}
+	adev->id = ret;
 
 	adev->name = "rdma";
 	adev->dev.parent = gd->gdma_context->dev;
-- 
2.30.2