ARM: omap2: gpmc: Remove redundant chip select out of range check

This check is done before the call to gpmc_cs_reserved() and
gpmc_cs_set_reserved() and it's redundant to do it again in each
function. This simplifies the code a bit.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 7c122bb..586dba7 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -441,22 +441,14 @@
 	return l & GPMC_CONFIG7_CSVALID;
 }
 
-static int gpmc_cs_set_reserved(int cs, int reserved)
+static void gpmc_cs_set_reserved(int cs, int reserved)
 {
-	if (cs > GPMC_CS_NUM)
-		return -ENODEV;
-
 	gpmc_cs_map &= ~(1 << cs);
 	gpmc_cs_map |= (reserved ? 1 : 0) << cs;
-
-	return 0;
 }
 
 static bool gpmc_cs_reserved(int cs)
 {
-	if (cs > GPMC_CS_NUM)
-		return true;
-
 	return gpmc_cs_map & (1 << cs);
 }