irqchip/riscv-imsic: Remove redundant irq_data lookups

imsic_irq_set_affinity() already takes the irq_data pointer as a
parameter, so it is pointless to look it up again from the IRQ number.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Author: SiFiveHolland

drivers/irqchip/irq-riscv-imsic-platform.c

@@ -158,11 +158,11 @@ static int imsic_irq_set_affinity(struct irq_data *d, const struct cpumask *mask
 		tmp_vec.local_id = new_vec->local_id;
 
 		/* Point device to the temporary vector */
-		imsic_msi_update_msg(irq_get_irq_data(d->irq), &tmp_vec);
+		imsic_msi_update_msg(d, &tmp_vec);
 	}
 
 	/* Point device to the new vector */
-	imsic_msi_update_msg(irq_get_irq_data(d->irq), new_vec);
+	imsic_msi_update_msg(d, new_vec);
 
 	/* Update irq descriptors with the new vector */
 	d->chip_data = new_vec;