staging: sm7xxfb: copy device name before we pass to the smtc_alloc_fb_info

the name is not initialised and passed to the function smtc_alloc_fb_info
and copies the name into a member of fb structure.

copy the name before calling alloc_fb_info.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Acked-by: Javier Muñoz <jmunhoz@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm7xxfb/sm7xxfb.c

@@ -798,6 +798,8 @@ static int __devinit smtcfb_pci_probe(struct pci_dev *pdev,
 	if (err)
 		return err;
 
+	sprintf(name, "sm%Xfb", ent->device);
+
 	sfb = smtc_alloc_fb_info(pdev, name);
 
 	if (!sfb) {
@@ -806,7 +808,6 @@ static int __devinit smtcfb_pci_probe(struct pci_dev *pdev,
 	}
 
 	sfb->chip_id = ent->device;
-	sprintf(name, "sm%Xfb", sfb->chip_id);
 
 	pci_set_drvdata(pdev, sfb);