fix unlikely memleak in zimatcopy interface

interface/zimatcopy.c

@@ -192,29 +192,21 @@ void CNAME( enum CBLAS_ORDER CORDER, enum CBLAS_TRANSPOSE CTRANS, blasint crows,
 		{
 	  		OMATCOPY_K_CN(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_CN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 		if ( trans == BlasConj )
 		{
 			OMATCOPY_K_CNC(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_CN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 		if ( trans == BlasTrans )
 		{
 			OMATCOPY_K_CT(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_CN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 		if ( trans == BlasTransConj )
 		{
 			OMATCOPY_K_CTC(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_CN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 
 	}
@@ -225,33 +217,25 @@ void CNAME( enum CBLAS_ORDER CORDER, enum CBLAS_TRANSPOSE CTRANS, blasint crows,
 		{
 			OMATCOPY_K_RN(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_RN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 		if ( trans == BlasConj )
 		{
 			OMATCOPY_K_RNC(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_RN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 		if ( trans == BlasTrans )
 		{
 			OMATCOPY_K_RT(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_RN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 		if ( trans == BlasTransConj )
 		{
 			OMATCOPY_K_RTC(*rows, *cols, alpha[0], alpha[1], a, *lda, b, *ldb );
 	  		OMATCOPY_K_RN(*rows, *cols, (FLOAT) 1.0, (FLOAT) 0.0 , b, *ldb, a, *ldb );
-			free(b);
-			return;
 		}
 
 	}
-
+	free(b);
 	return;
 
 }