usb: musb: blackfin: call gpio_free() on error path in musb_platform_init()

Blackfin's musb_platform_init() needs to call gpio_free() for error cleanup iff
otg_get_transceiver() call returns NULL.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/musb/blackfin.c

@@ -342,8 +342,10 @@ int __init musb_platform_init(struct musb *musb, void *board_data)
 
 	usb_nop_xceiv_register();
 	musb->xceiv = otg_get_transceiver();
-	if (!musb->xceiv)
+	if (!musb->xceiv) {
+		gpio_free(musb->config->gpio_vrsel);
 		return -ENODEV;
+	}
 
 	if (ANOMALY_05000346) {
 		bfin_write_USB_APHY_CALIB(ANOMALY_05000346_value);