ssb: Fix error routine when fallback SPROM fails

commit 8052d724 upstream.

When there is a CRC error in the SPROM read from the device, the code
attempts to handle a fallback SPROM. When this also fails, the driver
returns zero rather than an error code.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

drivers/ssb/pci.c

@@ -713,6 +713,7 @@ static int ssb_pci_sprom_get(struct ssb_bus *bus,
 				ssb_printk(KERN_WARNING PFX "WARNING: Using"
 					   " fallback SPROM failed (err %d)\n",
 					   err);
+				goto out_free;
 			} else {
 				ssb_dprintk(KERN_DEBUG PFX "Using SPROM"
 					    " revision %d provided by"