When unsigned, scsi_dma_map may return -ENOMEM without triggering BUG_ON()

Signed-off-by: Roel Kluin
diff --git a/drivers/scsi/u14-34f.c b/drivers/scsi/u14-34f.c
index 329eb87..601e951 100644
--- a/drivers/scsi/u14-34f.c
+++ b/drivers/scsi/u14-34f.c
@@ -1111,7 +1111,8 @@ static int u14_34f_detect(struct scsi_host_template *tpnt) {

static void map_dma(unsigned int i, unsigned int j) {
unsigned int data_len = 0;
- unsigned int k, count, pci_dir;
+ unsigned int k, pci_dir;
+ int count;
struct scatterlist *sg;
struct mscp *cpp;
struct scsi_cmnd *SCpnt;
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