USB: missing error check in emi26

this drivers lacks an error check.
Signed-off-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/misc/emi26.c

@@ -114,6 +114,10 @@ static int emi26_load_firmware (struct usb_device *dev)
 
 	/* De-assert reset (let the CPU run) */
 	err = emi26_set_reset(dev,0);
+	if (err < 0) {
+		err("%s - error loading firmware: error = %d", __FUNCTION__, err);
+		goto wraperr;
+	}
 	msleep(250);	/* let device settle */
 
 	/* 2. We upload the FPGA firmware into the EMI