msm: camera: Fix stream on error

When ISP stream is enabled or disable on the fly,
the ioctl is blocked until there is a register update
ack. If the ack does not come, the ioctl will timeout.
The return value for sucessful case should be 0 instead
of the jiffies remaining before timeout.

Change-Id: Ie549b7a0b75160d3c96f336c8a6a072e35c1ab43
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>

drivers/media/platform/msm/camera_v2/isp/msm_isp_axi_util.c

@@ -881,6 +881,8 @@ int msm_isp_cfg_axi_stream(struct vfe_device *vfe_dev, void *arg)
 		if (rc == 0) {
 			pr_err("%s: wait timeout\n", __func__);
 			rc = -1;
+		} else {
+			rc = 0;
 		}
 	}
 	return rc;