usb: typec: tipd: Free IRQ only if it was requested before

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

usb: typec: tipd: Free IRQ only if it was requested before

In polling mode, if no IRQ was requested there is no need to free it.

Call devm_free_irq() only if client->irq is set. This fixes the warning

caused by the tps6598x module removal:

WARNING: CPU: 2 PID: 333 at kernel/irq/devres.c:144 devm_free_irq+0x80/0x8c

...

...

Call trace:

devm_free_irq+0x80/0x8c

tps6598x_remove+0x28/0x88 [tps6598x]

i2c_device_remove+0x2c/0x9c

device_remove+0x4c/0x80

device_release_driver_internal+0x1cc/0x228

driver_detach+0x50/0x98

bus_remove_driver+0x6c/0xbc

driver_unregister+0x30/0x60

i2c_del_driver+0x54/0x64

tps6598x_i2c_driver_exit+0x18/0xc3c [tps6598x]

__arm64_sys_delete_module+0x184/0x264

invoke_syscall+0x48/0x110

el0_svc_common.constprop.0+0xc8/0xe8

do_el0_svc+0x20/0x2c

el0_svc+0x28/0x98

el0t_64_sync_handler+0x13c/0x158

el0t_64_sync+0x190/0x194