ARM: tegra: Fix unchecked return value

Check a return value for tegra_powergate_remove_clamping().

Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index 2c6b3d5..4dfc75e 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -124,6 +124,9 @@
 
 	/* Remove I/O clamps. */
 	ret = tegra_powergate_remove_clamping(pwrgateid);
+	if (ret)
+		return ret;
+
 	udelay(10);
 
 	/* Clear flow controller CSR. */