[PATCH net] net: ethernet: adi: adin1110: Fix some error handling path in adin1110_read_fifo()

[Christophe JAILLET]

If 'frame_size' is too small or if 'round_len' is an error code, it is
likely that an error code should be returned to the caller.

Actually, 'ret' is likely to be 0, so if one of these sanity checks fails,
'success' is returned.

Return -EINVAL instead.

Fixes: bc93e19d088b ("net: ethernet: adi: Add ADIN1110 support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
This patch is speculative.
If returning 0 is what was intended, then an explicit 0 would be better.
---
 drivers/net/ethernet/adi/adin1110.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/adi/adin1110.c b/drivers/net/ethernet/adi/adin1110.c
index 3431a7e62b0d..c04036b687dd 100644
--- a/drivers/net/ethernet/adi/adin1110.c
+++ b/drivers/net/ethernet/adi/adin1110.c
@@ -318,11 +318,11 @@ static int adin1110_read_fifo(struct adin1110_port_priv *port_priv)
 	 * from the  ADIN1110 frame header.
 	 */
 	if (frame_size < ADIN1110_FRAME_HEADER_LEN + ADIN1110_FEC_LEN)
-		return ret;
+		return -EINVAL;
 
 	round_len = adin1110_round_len(frame_size);
 	if (round_len < 0)
-		return ret;
+		return -EINVAL;
 
 	frame_size_no_fcs = frame_size - ADIN1110_FRAME_HEADER_LEN - ADIN1110_FEC_LEN;
 	memset(priv->data, 0, ADIN1110_RD_HEADER_LEN);
-- 
2.46.2