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

[ Upstream commit 83211ae1 ]

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: bc93e19d ("net: ethernet: adi: Add ADIN1110 support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/8ff73b40f50d8fa994a454911b66adebce8da266.1727981562.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>