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powerpc/pseries: Correct MSI allocation tracking

The per-device MSI allocation calculation in pseries_irq_domain_alloc()
is clearly wrong. It can still happen to work when nr_irqs is 1.

Correct it.

Fixes: c0215e2d72de ("powerpc/pseries: Fix MSI-X allocation failure when quota is exceeded")
Cc: stable@vger.kernel.org
Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Reviewed-by: Nilay Shroff <nilay@linux.ibm.com>
[maddy: Fixed Nilay's reviewed-by tag]
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260302003948.1452016-1-namcao@linutronix.de

authored by

Nam Cao and committed by
Madhavan Srinivasan 35e4f2a1 6373a2b5

+1 -1
+1 -1
arch/powerpc/platforms/pseries/msi.c
··· 605 605 &pseries_msi_irq_chip, pseries_dev); 606 606 } 607 607 608 - pseries_dev->msi_used++; 608 + pseries_dev->msi_used += nr_irqs; 609 609 return 0; 610 610 611 611 out: