[POWERPC] Fix unbalanced uses of of_node_put

The (maple|pasemi)_init_IRQ functions call of_node_put(root) once more
than they should, causing the refcount of the root node to underflow,
which triggers the WARN_ON in kref_get.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/maple/setup.c

@@ -254,7 +254,6 @@ static void __init maple_init_IRQ(void)
 		printk(KERN_DEBUG "OpenPIC addr: %lx, has ISUs: %d\n",
 		       openpic_addr, has_isus);
 	}
-	of_node_put(root);
 
 	BUG_ON(openpic_addr == 0);
 

arch/powerpc/platforms/pasemi/setup.c

@@ -129,7 +129,6 @@ static __init void pas_init_IRQ(void)
 	}
 	openpic_addr = of_read_number(opprop, naddr);
 	printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
-	of_node_put(root);
 
 	mpic = mpic_alloc(mpic_node, openpic_addr, MPIC_PRIMARY, 0, 0,
 			  " PAS-OPIC  ");