i40e: Fix display error code in dmesg

i40e: Fix display error code in dmesg

BugLink: https://bugs.launchpad.net/bugs/1954834
[ Upstream commit 5aff430d4e33a0b48a6b3d5beb06f79da23f9916 ]

Fix misleading display error in dmesg if tc filter return fail.
Only i40e status error code should be converted to string, not linux
error code. Otherwise, we return false information about the error.

Fixes: 2f4b411a3d67 ("i40e: Enable cloud filters via tc-flower")
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>