msm: kgsl: Fix a logical error in the gpu hang detection code

Change the GPU hang detection code to avoid the normal case is
mistakely treated as GPU hang scenario.

CRs-Fixed: 378488
Change-Id: Ie79a8d91e35c51ba043e7a845c9a56266277f1a0
Signed-off-by: Wei Zou <wzou@codeaurora.org>

drivers/gpu/msm/adreno_ringbuffer.c

@@ -120,6 +120,8 @@ adreno_ringbuffer_waitspace(struct adreno_ringbuffer *rb, unsigned int numcmds,
 			goto err;
 		}
 
+		continue;
+
 err:
 		if (!adreno_dump_and_recover(rb->device))
 				wait_time = jiffies + wait_timeout;