USB: musb: suppress warning about unused flags

Wrap flags with uninitialized_var() to suppress this:

drivers/usb/musb/cppi_dma.c:1158: warning: 'flags' may be used uninitialized
in this function

Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index 5ab5bb8..f5a65ff 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -1156,7 +1156,7 @@
 	struct musb_hw_ep	*hw_ep = NULL;
 	u32			rx, tx;
 	int			i, index;
-	unsigned long		flags;
+	unsigned long		uninitialized_var(flags);
 
 	cppi = container_of(musb->dma_controller, struct cppi, controller);
 	if (cppi->irq)