UPSTREAM: usb: dwc3: Fix error handling for core init

Fixing the sequence of events in dwc3_core_init() error exit path.
dwc3_core_exit() call is also removed from the error path since,
whatever it's doing is already done.

Change-Id: I71f6aab189df0e5223d490fb6eaeebe1481a6b65
Fixes: c499ff7 usb: dwc3: core: re-factor init and exit paths
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Stable <stable@vger.kernel.org> # 4.8+
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
(cherry picked from commit 9b9d7cdd0a20a8c26a022604580f93516ad69c36)

Author: vivekgautam1

drivers/usb/dwc3/core.c

@@ -718,15 +718,14 @@ static int dwc3_core_init(struct dwc3 *dwc)
 	return 0;
 
 err4:
-	phy_power_off(dwc->usb2_generic_phy);
+	phy_power_off(dwc->usb3_generic_phy);
 
 err3:
-	phy_power_off(dwc->usb3_generic_phy);
+	phy_power_off(dwc->usb2_generic_phy);
 
 err2:
 	usb_phy_set_suspend(dwc->usb2_phy, 1);
 	usb_phy_set_suspend(dwc->usb3_phy, 1);
-	dwc3_core_exit(dwc);
 
 err1:
 	usb_phy_shutdown(dwc->usb2_phy);