imx8m: clock_imx8mm: add missed return

Add missed return

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
index 3610f5b..9dde11c 100644
--- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
@@ -360,6 +360,7 @@
 		clock_enable(CCGR_ECSPI2, 0);
 		clock_set_target_val(ECSPI2_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(0));
 		clock_enable(CCGR_ECSPI2, 1);
+		return;
 	case 2:
 		clock_enable(CCGR_ECSPI3, 0);
 		clock_set_target_val(ECSPI3_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(0));