[PATCH][next] octeontx2-af: Fix return of uninitialized variable err

[PATCH][next] octeontx2-af: Fix return of uninitialized variable err

[Colin King]

From: Colin Ian King <colin.king@canonical.com>

Currently the variable err may be uninitialized if several of the if
statements are not executed in function nix_tx_vtag_decfg and a garbage
value in err is returned.  Fix this by initialized ret at the start of
the function.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 9a946def264d ("octeontx2-af: Modify nix_vtag_cfg mailbox to support TX VTAG entries")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index e8d039503097..739b37034bdf 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -2085,7 +2085,7 @@ static int nix_tx_vtag_decfg(struct rvu *rvu, int blkaddr,
 	u16 pcifunc = req->hdr.pcifunc;
 	int idx0 = req->tx.vtag0_idx;
 	int idx1 = req->tx.vtag1_idx;
-	int err;
+	int err = 0;
 
 	if (req->tx.free_vtag0 && req->tx.free_vtag1)
 		if (vlan->entry2pfvf_map[idx0] != pcifunc ||
-- 
2.28.0

Re: [PATCH][next] octeontx2-af: Fix return of uninitialized variable err

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Wed, 18 Nov 2020 13:25:02 +0000 you wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Currently the variable err may be uninitialized if several of the if
> statements are not executed in function nix_tx_vtag_decfg and a garbage
> value in err is returned.  Fix this by initialized ret at the start of
> the function.
> 
> [...]

Here is the summary with links:
  - [next] octeontx2-af: Fix return of uninitialized variable err
    https://git.kernel.org/netdev/net-next/c/dd6028a3cb5d

You are awesome, thank you!
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