[patch -next v2] bcma: signedness bug in bcma_get_next_core()

[Dan Carpenter <error27@gmail.com>]

The u32 would never be less than zero so the error handling would
break.  I changed it to s32 to match how bcma_erom_get_mst_port() is
declared.

Signed-off-by: Dan Carpenter <error27@gmail.com>
---
v2:  the first version used "int" instead of "s32".

diff --git a/drivers/bcma/scan.c b/drivers/bcma/scan.c
index 0ea390f..cad9948 100644
--- a/drivers/bcma/scan.c
+++ b/drivers/bcma/scan.c
@@ -281,7 +281,7 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
 
 	/* get & parse master ports */
 	for (i = 0; i < ports[0]; i++) {
-		u32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
+		s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
 		if (mst_port_d < 0)
 			return -EILSEQ;
 	}