genirq/ipi: Fix NULL pointer deref in irq_data_get_affinity_mask()

mainline inclusion
from mainline-v6.3-rc1
commit feabecaf
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9OZI6

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=feabecaff5902f896531dde90646ca5dfa9d4f7d



--------------------------------

If ipi_send_{mask|single}() is called with an invalid interrupt number, all
the local variables there will be NULL. ipi_send_verify() which is invoked
from these functions does verify its 'data' parameter, resulting in a
kernel oops in irq_data_get_affinity_mask() as the passed NULL pointer gets
dereferenced.

Add a missing NULL pointer check in ipi_send_verify()...

Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.

Fixes: 3b8e29a8 ("genirq: Implement ipi_send_mask/single()")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/b541232d-c2b6-1fe9-79b4-a7129459e4d0@omp.ru



Conflicts:
	kernel/irq/ipi.c
[This conflict is caused by unmatched context]

Singed-off-by: Liao Chen <liaochen4@huawei.com>