Revert "r300: Gracefully exit after GART memory is exhausted."

This reverts commit 9457bf62bb.

Causes the X server to die with Compiz and Beryl.

src/mesa/drivers/dri/r300/r300_mem.c

@@ -208,10 +208,23 @@ int r300_mem_alloc(r300ContextPtr rmesa, int alignment, int size)
 	    drmCommandWriteRead(rmesa->radeon.dri.fd, DRM_RADEON_ALLOC, &alloc,
 				sizeof(alloc));
 	if (ret) {
+#if 0
+		WARN_ONCE("Ran out of mem!\n");
+		r300FlushCmdBuf(rmesa, __FUNCTION__);
+		//usleep(100);
+		tries2++;
+		tries = 0;
+		if (tries2 > 100) {
+			WARN_ONCE("Ran out of GART memory!\n");
+			exit(1);
+		}
+		goto again;
+#else
 		WARN_ONCE
 		    ("Ran out of GART memory (for %d)!\nPlease consider adjusting GARTSize option.\n",
 		     size);
-		exit(1);
+		return 0;
+#endif
 	}
 
 	i = free;