[RFC 6/8] powerpc/prom: Simplify the logic while fetching SLB size

[Anshuman Khandual <khandual@linux.vnet.ibm.com>]

From: "khandual@linux.vnet.ibm.com" <khandual@linux.vnet.ibm.com>

This patch just simplifies the existing code logic while fetching
the SLB size property from the device tree.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
 arch/powerpc/kernel/prom.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 8b888b1..f6168e2 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -223,14 +223,12 @@ static void __init check_cpu_slb_size(unsigned long node)
 	const __be32 *slb_size_ptr;
 
 	slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL);
-	if (slb_size_ptr != NULL) {
-		mmu_slb_size = be32_to_cpup(slb_size_ptr);
-		return;
-	}
-	slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
-	if (slb_size_ptr != NULL) {
-		mmu_slb_size = be32_to_cpup(slb_size_ptr);
+	if (!slb_size_ptr) {
+		slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
+		if (!slb_size_ptr)
+			return;
 	}
+	mmu_slb_size = be32_to_cpup(slb_size_ptr);
 }
 #else
 #define check_cpu_slb_size(node) do { } while(0)
-- 
2.1.0