net/mlx5e: Fix wrong return value on ioctl EEPROM query failure

stable inclusion
from stable-v5.10.103
commit bc8f768af342dd63232346078828a7e932f8be8d
bugzilla: https://gitee.com/openeuler/kernel/issues/I56NE7

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bc8f768af342dd63232346078828a7e932f8be8d

--------------------------------

commit 0b894297 upstream.

The ioctl EEPROM query wrongly returns success on read failures, fix
that by returning the appropriate error code.

Fixes: bb64143e ("net/mlx5e: Add ethtool support for dump module EEPROM")
Signed-off-by: NGal Pressman <gal@nvidia.com>
Reviewed-by: NTariq Toukan <tariqt@nvidia.com>
Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYu Liao <liaoyu15@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c

@@ -1754,7 +1754,7 @@ static int mlx5e_get_module_eeprom(struct net_device *netdev,
 		if (size_read < 0) {
 			netdev_err(priv->netdev, "%s: mlx5_query_eeprom failed:0x%x\n",
 				   __func__, size_read);
-			return 0;
+			return size_read;
 		}
 
 		i += size_read;