net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup

In the Linux kernel, the following vulnerability has been resolved:

net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup

Currently napi_disable() gets called during rxq and txq cleanup,

even before napi is enabled and hrtimer is initialized. It causes

kernel panic.

? page_fault_oops+0x136/0x2b0

? page_counter_cancel+0x2e/0x80

? do_user_addr_fault+0x2f2/0x640

? refill_obj_stock+0xc4/0x110

? exc_page_fault+0x71/0x160

? asm_exc_page_fault+0x27/0x30

? __mmdrop+0x10/0x180

? __mmdrop+0xec/0x180

? hrtimer_active+0xd/0x50

hrtimer_try_to_cancel+0x2c/0xf0

hrtimer_cancel+0x15/0x30

napi_disable+0x65/0x90

mana_destroy_rxq+0x4c/0x2f0

mana_create_rxq.isra.0+0x56c/0x6d0

? mana_uncfg_vport+0x50/0x50

mana_alloc_queues+0x21b/0x320

? skb_dequeue+0x5f/0x80