staging: octeon: fix free_irq dev_id mismatch in cvm_oct_rx_shutdown

staging: octeon: fix free_irq dev_id mismatch in cvm_oct_rx_shutdown

In cvm_oct_rx_initialize(), request_irq() is called with
&oct_rx_group[i].napi as the dev_id:

	request_irq(oct_rx_group[i].irq, cvm_oct_do_interrupt, 0, "Ethernet",
							&oct_rx_group[i].napi);

However, cvm_oct_rx_shutdown() passes cvm_oct_device (an array of
struct net_device pointers) as the dev_id to free_irq():

  free_irq(oct_rx_group[i].irq, cvm_oct_device);

Since __free_irq() matches the action to remove by comparing
dev_id pointers, the mismatched cookie means the IRQ handler is
never found, triggering a WARN and leaving the IRQ line permanently
allocated. This prevents proper driver cleanup on module removal.

Fix the mismatch by passing &oct_rx_group[i].napi as the dev_id
to free_irq(), matching what was used during request_irq().

Signed-off-by: Yuvraj Singh Chauhan <ysinghcin@gmail.com>
Link: https://patch.msgid.link/20260212171903.1417804-1-ysinghcin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>