parisc: Check the return value of ioremap() in lba_driver_probe()

commit cf59f34 upstream.

The function ioremap() in lba_driver_probe() can fail, so
its return value should be checked.

Fixes: 4bdc0d6 ("remove ioremap_nocache and devm_ioremap_nocache")
Reported-by: Hacash Robot <[email protected]>
Signed-off-by: William Dean <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
Cc: <[email protected]> # v5.6+
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: William Dean

drivers/parisc/lba_pci.c

@@ -1476,9 +1476,13 @@ lba_driver_probe(struct parisc_device *dev)
 	u32 func_class;
 	void *tmp_obj;
 	char *version;
-	void __iomem *addr = ioremap(dev->hpa.start, 4096);
+	void __iomem *addr;
 	int max;
 
+	addr = ioremap(dev->hpa.start, 4096);
+	if (addr == NULL)
+		return -ENOMEM;
+
 	/* Read HW Rev First */
 	func_class = READ_REG32(addr + LBA_FCLASS);