USB: missing error check in emi62

the emi62 also lacks an error check.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/misc/emi62.c b/drivers/usb/misc/emi62.c
index 4758cc5..d136241 100644
--- a/drivers/usb/misc/emi62.c
+++ b/drivers/usb/misc/emi62.c
@@ -123,6 +123,10 @@
 
 	/* De-assert reset (let the CPU run) */
 	err = emi62_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