mISDN/dsp_cmx.c: fix size checks

The checks for ensuring that the array indices are inside the range
were flipped.
Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/mISDN/dsp_cmx.c

@@ -452,10 +452,10 @@ one_member:
 			if (finddsp->features.pcm_id == dsp->features.pcm_id) {
 				if (finddsp->pcm_slot_rx >= 0 &&
 				    finddsp->pcm_slot_rx < sizeof(freeslots))
-					freeslots[finddsp->pcm_slot_tx] = 0;
+					freeslots[finddsp->pcm_slot_rx] = 0;
 				if (finddsp->pcm_slot_tx >= 0 &&
 				    finddsp->pcm_slot_tx < sizeof(freeslots))
-					freeslots[finddsp->pcm_slot_rx] = 0;
+					freeslots[finddsp->pcm_slot_tx] = 0;
 			}
 		}
 		i = 0;