ide/pci/sis5513.c: add missing "else"

This patch adds a missing "else" that was missing in
commit c77a89cd.

Spotted by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>,
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/pci/sis5513.c

@@ -264,7 +264,7 @@ static void sis_ata133_program_timings(ide_drive_t *drive, const u8 mode)
 	if (mode >= XFER_MW_DMA_0) {
 		t1 &= ~0x04;	/* disable UDMA */
 		idx = mode - XFER_MW_DMA_0 + 5;
-	}
+	} else
 		idx = mode - XFER_PIO_0;
 	t1 |= ini_time_value[clk][idx] << 12;
 	t1 |= act_time_value[clk][idx] << 16;