i40e: Fix error handling in i40e_vsi_open

[ Upstream commit 9c04cfcd4aad232e36306cdc5c74cd9fc9148a7e ]

When vsi->type == I40E_VSI_FDIR, we have caught the return value of
i40e_vsi_request_irq() but without further handling. Check and execute
memory clean on failure just like the other i40e_vsi_request_irq().

Fixes: 8a9eb7d3 ("i40e: rework fdir setup and teardown")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>