ENGR00221445 ov5642: return error number when change camera mode

return error number when set camera change mode fail, if not the
driver may continue to setup the video processing with wrong parameter.
Signed-off-by: Yuxi Sun <b36102@freescale.com>

drivers/media/video/mxc/capture/ov5642.c

@@ -3228,6 +3228,7 @@ err:
 static int ov5642_write_snapshot_para(enum ov5642_frame_rate frame_rate,
        enum ov5642_mode mode)
 {
+	int ret = 0;
 	bool m_60Hz = false;
 	u16 capture_frame_rate = 50;
 	u16 g_preview_frame_rate = 225;
@@ -3255,7 +3256,10 @@ static int ov5642_write_snapshot_para(enum ov5642_frame_rate frame_rate,
 	gain = 0;
 	ov5642_read_reg(0x350b, &gain);
 
-	ov5642_init_mode(frame_rate, mode);
+	ret = ov5642_init_mode(frame_rate, mode);
+	if (ret < 0)
+		return ret;
+
 	ret_h = ret_m = ret_l = 0;
 	ov5642_read_reg(0x380e, &ret_h);
 	ov5642_read_reg(0x380f, &ret_l);
@@ -3331,7 +3335,7 @@ static int ov5642_write_snapshot_para(enum ov5642_frame_rate frame_rate,
 	ov5642_write_reg(0x3500, exposure_high);
 	msleep(500);
 
-	return 0;
+	return ret ;
 }