net: mana: Skip WQ object destruction for uninitialized RXQ

net: mana: Skip WQ object destruction for uninitialized RXQ

In mana_destroy_rxq(), mana_destroy_wq_obj() is called unconditionally
even when the WQ object was never created (rxobj is still
INVALID_MANA_HANDLE). When mana_create_rxq() fails before
mana_create_wq_obj() succeeds, the error path calls mana_destroy_rxq()
which sends a bogus destroy command to the hardware:

    mana 7870:00:00.0: HWC: Failed hw_channel req: 0x1d
    mana 7870:00:00.0: Failed to send mana message: -71, 0x1d
    mana 7870:00:00.0 eth7: Failed to destroy WQ object: -71

Guard mana_destroy_wq_obj() with an INVALID_MANA_HANDLE check so that
mana_destroy_rxq() is safe to call at any stage of RXQ initialization.

Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com>
Link: https://patch.msgid.link/20260430035935.1859220-3-dipayanroy@linux.microsoft.com
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>