MIPS: Jazz: Fix read buffer overflow

Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <[e-mail]>
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/jazz/jazzdma.c

···
 		return -1;
 	}
 
-	while (pgtbl[i].owner == laddr && i < VDMA_PGTBL_ENTRIES) {
+	while (i < VDMA_PGTBL_ENTRIES && pgtbl[i].owner == laddr) {
 		pgtbl[i].owner = VDMA_PAGE_EMPTY;
 		i++;
 	}