powerpc/mpic_msgr: fix offset error when setting mer register

Signed-off-by: Mingkai Hu <[e-mail]>
Signed-off-by: Kumar Gala <[e-mail]>

arch/powerpc/sysdev/mpic_msgr.c

···
 
 		reg_number = block_number * MPIC_MSGR_REGISTERS_PER_BLOCK + i;
 		msgr->base = msgr_block_addr + i * MPIC_MSGR_STRIDE;
-		msgr->mer = msgr->base + MPIC_MSGR_MER_OFFSET;
+		msgr->mer = (u32 *)((u8 *)msgr->base + MPIC_MSGR_MER_OFFSET);
 		msgr->in_use = MSGR_FREE;
 		msgr->num = i;
 		raw_spin_lock_init(&msgr->lock);